diff --git a/common/config/rush/common-versions.json b/common/config/rush/common-versions.json
index 1ac1c471db02..5e309d53e9ef 100644
--- a/common/config/rush/common-versions.json
+++ b/common/config/rush/common-versions.json
@@ -43,6 +43,8 @@
     "@azure/ms-rest-js": ["^2.0.0"],
     // Following is required to allow for backward compatibility with Service Bus Track 1
     // TODO: Remove this once Service Bus is updated to use current depenedencies as part of Track 2
-    "rhea-promise": ["^0.1.15"]
+    "rhea-promise": ["^0.1.15"],
+    // Following is required to allow for backward compatibility with Event Processor Host Track 1
+    "@azure/event-hubs": ["^2.1.1"]
   }
 }
diff --git a/common/config/rush/pnpm-lock.yaml b/common/config/rush/pnpm-lock.yaml
index 725e717a537a..348dca8a82b8 100644
--- a/common/config/rush/pnpm-lock.yaml
+++ b/common/config/rush/pnpm-lock.yaml
@@ -7,7 +7,8 @@ dependencies:
   '@azure/logger-js': 1.3.2
   '@azure/ms-rest-js': 2.0.4
   '@azure/ms-rest-nodeauth': 0.9.3
-  '@microsoft/api-extractor': 7.3.11
+  '@azure/storage-blob': 12.0.0-preview.2
+  '@microsoft/api-extractor': 7.3.8
   '@rush-temp/abort-controller': 'file:projects/abort-controller.tgz'
   '@rush-temp/app-configuration': 'file:projects/app-configuration.tgz'
   '@rush-temp/core-amqp': 'file:projects/core-amqp.tgz'
@@ -17,9 +18,10 @@ dependencies:
   '@rush-temp/core-http': 'file:projects/core-http.tgz'
   '@rush-temp/core-paging': 'file:projects/core-paging.tgz'
   '@rush-temp/core-tracing': 'file:projects/core-tracing.tgz'
-  '@rush-temp/cosmos': 'file:projects/cosmos.tgz_webpack@4.39.3'
+  '@rush-temp/cosmos': 'file:projects/cosmos.tgz_webpack@4.39.2'
   '@rush-temp/event-hubs': 'file:projects/event-hubs.tgz'
   '@rush-temp/event-processor-host': 'file:projects/event-processor-host.tgz'
+  '@rush-temp/eventhubs-checkpoint-blob': 'file:projects/eventhubs-checkpoint-blob.tgz'
   '@rush-temp/identity': 'file:projects/identity.tgz'
   '@rush-temp/keyvault-certificates': 'file:projects/keyvault-certificates.tgz'
   '@rush-temp/keyvault-keys': 'file:projects/keyvault-keys.tgz'
@@ -33,7 +35,7 @@ dependencies:
   '@rush-temp/testhub': 'file:projects/testhub.tgz'
   '@trust/keyto': 0.3.7
   '@types/async-lock': 1.1.1
-  '@types/chai': 4.2.1
+  '@types/chai': 4.2.0
   '@types/chai-as-promised': 7.1.2
   '@types/chai-string': 1.4.2
   '@types/debug': 4.1.5
@@ -51,7 +53,7 @@ dependencies:
   '@types/mocha': 5.2.7
   '@types/nise': 1.4.0
   '@types/nock': 10.0.3
-  '@types/node': 8.10.53
+  '@types/node': 8.10.52
   '@types/node-fetch': 2.5.0
   '@types/priorityqueuejs': 1.0.1
   '@types/qs': 6.5.3
@@ -62,13 +64,13 @@ dependencies:
   '@types/tunnel': 0.0.1
   '@types/underscore': 1.9.2
   '@types/uuid': 3.4.5
-  '@types/webpack': 4.39.1
+  '@types/webpack': 4.39.0
   '@types/webpack-dev-middleware': 2.0.3
   '@types/ws': 6.0.3
   '@types/xml2js': 0.4.4
   '@types/yargs': 13.0.2
-  '@typescript-eslint/eslint-plugin': 2.1.0_3a8cea979a77aa77c321dad4153067ce
-  '@typescript-eslint/parser': 2.1.0_eslint@6.3.0
+  '@typescript-eslint/eslint-plugin': 2.0.0_3cafee28902d96627d4743e014bc28ff
+  '@typescript-eslint/parser': 2.0.0_eslint@6.2.1
   abort-controller: 3.0.0
   assert: 1.5.0
   async-lock: 1.2.2
@@ -76,20 +78,20 @@ dependencies:
   azure-storage: 2.10.3
   babel-runtime: 6.26.0
   binary-search-bounds: 2.0.3
-  buffer: 5.4.2
+  buffer: 5.4.0
   chai: 4.2.0
   chai-as-promised: 7.1.1_chai@4.2.0
   chai-string: 1.5.0_chai@4.2.0
-  cross-env: 5.2.1
+  cross-env: 5.2.0
   crypto-hash: 1.1.0
   death: 1.1.0
   debug: 4.1.1
   delay: 4.3.0
   dotenv: 8.1.0
   es6-promise: 4.2.8
-  eslint: 6.3.0
-  eslint-config-prettier: 6.2.0_eslint@6.3.0
-  eslint-plugin-no-null: 1.0.2_eslint@6.3.0
+  eslint: 6.2.1
+  eslint-config-prettier: 6.1.0_eslint@6.2.1
+  eslint-plugin-no-null: 1.0.2_eslint@6.2.1
   eslint-plugin-no-only-tests: 2.3.1
   eslint-plugin-promise: 4.2.1
   esm: 3.2.18
@@ -98,9 +100,10 @@ dependencies:
   express: 4.17.1
   fast-json-stable-stringify: 2.0.0
   fetch-mock: 7.3.9
-  form-data: 2.5.1
+  form-data: 2.5.0
   fs-extra: 8.1.0
   glob: 7.1.4
+  guid-typescript: 1.0.9
   gulp: 4.0.2
   gulp-zip: 5.0.0_gulp@4.0.2
   https-proxy-agent: 2.2.2
@@ -108,26 +111,26 @@ dependencies:
   is-buffer: 2.0.3
   jssha: 2.3.1
   jws: 3.2.2
-  karma: 4.3.0
-  karma-chai: 0.1.0_chai@4.2.0+karma@4.3.0
+  karma: 4.2.0
+  karma-chai: 0.1.0_chai@4.2.0+karma@4.2.0
   karma-chrome-launcher: 3.1.0
   karma-cli: 2.0.0
   karma-coverage: 2.0.1
-  karma-edge-launcher: 0.4.2_karma@4.3.0
+  karma-edge-launcher: 0.4.2_karma@4.2.0
   karma-env-preprocessor: 0.1.1
   karma-firefox-launcher: 1.2.0
-  karma-ie-launcher: 1.0.0_karma@4.3.0
-  karma-json-preprocessor: 0.3.3_karma@4.3.0
+  karma-ie-launcher: 1.0.0_karma@4.2.0
+  karma-json-preprocessor: 0.3.3_karma@4.2.0
   karma-json-to-file-reporter: 1.0.1
-  karma-junit-reporter: 1.2.0_karma@4.3.0
+  karma-junit-reporter: 1.2.0_karma@4.2.0
   karma-mocha: 1.3.0
-  karma-mocha-reporter: 2.2.5_karma@4.3.0
+  karma-mocha-reporter: 2.2.5_karma@4.2.0
   karma-remap-coverage: 0.1.5_karma-coverage@2.0.1
-  karma-requirejs: 1.1.0_karma@4.3.0+requirejs@2.3.6
-  karma-rollup-preprocessor: 7.0.2_rollup@1.20.3
+  karma-requirejs: 1.1.0_karma@4.2.0+requirejs@2.3.6
+  karma-rollup-preprocessor: 7.0.2_rollup@1.20.1
   karma-sourcemap-loader: 0.3.7
   karma-typescript-es6-transform: 4.1.1
-  karma-webpack: 4.0.2_webpack@4.39.3
+  karma-webpack: 4.0.2_webpack@4.39.2
   long: 4.0.0
   mocha: 6.2.0
   mocha-chrome: 2.0.0
@@ -135,7 +138,7 @@ dependencies:
   mocha-multi: 1.1.3_mocha@6.2.0
   moment: 2.24.0
   msal: 1.1.3
-  nise: 1.5.2
+  nise: 1.5.1
   nock: 11.3.2
   node-abort-controller: 1.0.3
   node-fetch: 2.6.0
@@ -155,57 +158,63 @@ dependencies:
   rhea: 1.0.8
   rhea-promise: 0.1.15
   rimraf: 3.0.0
-  rollup: 1.20.3
+  rollup: 1.20.1
   rollup-plugin-alias: 1.5.2
-  rollup-plugin-commonjs: 10.1.0_rollup@1.20.3
+  rollup-plugin-commonjs: 10.0.2_rollup@1.20.1
   rollup-plugin-inject: 3.0.1
   rollup-plugin-json: 4.0.0
   rollup-plugin-local-resolve: 1.0.7
   rollup-plugin-multi-entry: 2.1.0
   rollup-plugin-node-globals: 1.4.0
-  rollup-plugin-node-resolve: 5.2.0_rollup@1.20.3
+  rollup-plugin-node-resolve: 5.2.0_rollup@1.20.1
   rollup-plugin-replace: 2.2.0
   rollup-plugin-shim: 1.0.0
-  rollup-plugin-sourcemaps: 0.4.2_rollup@1.20.3
-  rollup-plugin-terser: 5.1.1_rollup@1.20.3
-  rollup-plugin-uglify: 6.0.3_rollup@1.20.3
-  rollup-plugin-visualizer: 2.5.4_rollup@1.20.3
+  rollup-plugin-sourcemaps: 0.4.2_rollup@1.20.1
+  rollup-plugin-terser: 5.1.1_rollup@1.20.1
+  rollup-plugin-uglify: 6.0.2_rollup@1.20.1
+  rollup-plugin-visualizer: 2.5.4_rollup@1.20.1
   semaphore: 1.0.5
   shx: 0.3.2
-  sinon: 7.4.2
+  sinon: 7.4.1
   source-map-support: 0.5.13
   stream-browserify: 2.0.2
-  terser: 4.2.1
+  terser: 4.2.0
   tough-cookie: 3.0.1
-  ts-loader: 6.0.4_typescript@3.6.2
+  ts-loader: 6.0.4_typescript@3.5.3
   ts-mocha: 6.0.0_mocha@6.2.0
-  ts-node: 8.3.0_typescript@3.6.2
+  ts-node: 8.3.0_typescript@3.5.3
   tslib: 1.10.0
   tunnel: 0.0.6
   typedoc: 0.15.0
-  typescript: 3.6.2
+  typescript: 3.5.3
   uglify-js: 3.6.0
   universal-user-agent: 2.1.0
   url: 0.11.0
   util: 0.12.1
   uuid: 3.3.3
-  webpack: 4.39.3_webpack@4.39.3
-  webpack-cli: 3.3.7_webpack@4.39.3
-  webpack-dev-middleware: 3.7.1_webpack@4.39.3
+  webpack: 4.39.2_webpack@4.39.2
+  webpack-cli: 3.3.7_webpack@4.39.2
+  webpack-dev-middleware: 3.7.0_webpack@4.39.2
   ws: 7.1.2
   xhr-mock: 2.5.0
-  xml2js: 0.4.22
+  xml2js: 0.4.19
   yargs: 14.0.0
   yarn: 1.17.3
 lockfileVersion: 5.1
 packages:
+  /@azure/abort-controller/1.0.0-preview.1:
+    dependencies:
+      tslib: 1.10.0
+    dev: false
+    resolution:
+      integrity: sha512-NnJqi6oHqt06Q2hz4nO1HO0QlyusBa3E/wezvn9flHEtl0IHYSmzGbtlb+MaAJ5GzxwqSevQ4q1+4B8fvVijOA==
   /@azure/amqp-common/1.0.0-preview.6_rhea-promise@0.1.15:
     dependencies:
       '@azure/ms-rest-nodeauth': 0.9.3
       '@types/async-lock': 1.1.1
       '@types/is-buffer': 2.0.0
       async-lock: 1.2.2
-      buffer: 5.4.2
+      buffer: 5.4.0
       debug: 3.2.6
       events: 3.0.0
       is-buffer: 2.0.3
@@ -233,6 +242,40 @@ packages:
     dev: false
     resolution:
       integrity: sha512-hMp0y+j/odkAyTa5TYewn4hUlFdEe3sR9uTd2Oq+se61RtuDsqM7UWrNNlyylPyjIENSZHJVWN7jte/jvvMN2Q==
+  /@azure/core-auth/1.0.0-preview.2:
+    dependencies:
+      '@azure/abort-controller': 1.0.0-preview.1
+      tslib: 1.10.0
+    dev: false
+    resolution:
+      integrity: sha512-QATxlKPP2Yld8+eg8Hz8mXmowlG/z9B53HTkjBz0oJIzR+dBm9HJY2bPnT7RB8nyqdnm8JpU2mIp8YVZZO6ubg==
+  /@azure/core-http/1.0.0-preview.2:
+    dependencies:
+      '@azure/core-auth': 1.0.0-preview.2
+      '@types/tunnel': 0.0.1
+      axios: 0.19.0
+      form-data: 2.5.0
+      process: 0.11.10
+      tough-cookie: 3.0.1
+      tslib: 1.10.0
+      tunnel: 0.0.6
+      uuid: 3.3.3
+      xml2js: 0.4.19
+    dev: false
+    resolution:
+      integrity: sha512-7zvbuMxwFjqvZ8knyEky+tWJYq6nK/pDIOI44nuCsdzdeCA8G9Ul3tXuQ+1lI4NOUfd2Scj8Ckgb4Xh9+ckOuw==
+  /@azure/core-paging/1.0.0-preview.1:
+    dependencies:
+      '@azure/core-asynciterator-polyfill': 1.0.0-preview.1
+    dev: false
+    resolution:
+      integrity: sha512-mZHkadyAbhV1+brHEsWICnURW6E72D2HReM+8MWDn5oVJdlxD51w14PeqsOZC4UDYv4x2Eww5+PFRTEOrNB1Uw==
+  /@azure/core-tracing/1.0.0-preview.1:
+    dependencies:
+      tslib: 1.10.0
+    dev: false
+    resolution:
+      integrity: sha512-nDfxQopw7lfJG5N845BOS6Vcl84GcB1Q3BHKJAHghLOmdHQjV9Z92M4ziFAQ60UnOj2zrUefM6yDZcKjANCcyg==
   /@azure/cosmos-sign/1.0.2:
     dependencies:
       crypto-js: 3.1.9-1
@@ -274,12 +317,12 @@ packages:
     dependencies:
       '@types/tunnel': 0.0.0
       axios: 0.19.0
-      form-data: 2.5.1
+      form-data: 2.5.0
       tough-cookie: 2.5.0
       tslib: 1.10.0
       tunnel: 0.0.6
       uuid: 3.3.3
-      xml2js: 0.4.22
+      xml2js: 0.4.19
     dev: false
     resolution:
       integrity: sha512-jAa6Y2XrvwbEqkaEXDHK+ReNo0WnCPS+LgQ1dRAJUUNxK4CghF5u+SXsVtPENritilVE7FVteqsLOtlhTk+haA==
@@ -288,13 +331,13 @@ packages:
       '@types/node-fetch': 2.5.0
       '@types/tunnel': 0.0.1
       abort-controller: 3.0.0
-      form-data: 2.5.1
+      form-data: 2.5.0
       node-fetch: 2.6.0
       tough-cookie: 3.0.1
       tslib: 1.10.0
       tunnel: 0.0.6
       uuid: 3.3.3
-      xml2js: 0.4.22
+      xml2js: 0.4.19
     dev: false
     resolution:
       integrity: sha512-nSOPt6st0RtxclYBQV65qXZpvMDqiDQssktvB/SMTAJ5bIytSPtBmlttTTigO5qHvwQcfzzpQE0sMceK+dJ/IQ==
@@ -306,6 +349,16 @@ packages:
     dev: false
     resolution:
       integrity: sha512-aFHRw/IHhg3I9ZJW+Va4L+sCirFHMVIu6B7lFdL5mGLfG3xC5vDIdd957LRXFgy2OiKFRUC0QaKknd0YCsQIqA==
+  /@azure/storage-blob/12.0.0-preview.2:
+    dependencies:
+      '@azure/abort-controller': 1.0.0-preview.1
+      '@azure/core-http': 1.0.0-preview.2
+      '@azure/core-paging': 1.0.0-preview.1
+      events: 3.0.0
+      tslib: 1.10.0
+    dev: false
+    resolution:
+      integrity: sha512-YOZ3l065gmnaLdcpkyY+C02x2yi9XFo5ARZQGtoDMUz7VD+QzIbDwWsYlWOArVEm5Dxhl3v1zKJ1V6bi06iHEQ==
   /@babel/code-frame/7.5.5:
     dependencies:
       '@babel/highlight': 7.5.0
@@ -387,6 +440,14 @@ packages:
     dev: false
     resolution:
       integrity: sha512-s63F9nJioLqOlW3UkyMd+BYhXt44YuaFm/VV0VwuteqjYwRrObkU7ra9pY4wAJR3oXi8hJrMcrcJdO/HH33vtw==
+  /@microsoft/api-extractor-model/7.3.2:
+    dependencies:
+      '@microsoft/node-core-library': 3.14.0
+      '@microsoft/tsdoc': 0.12.12
+      '@types/node': 8.5.8
+    dev: false
+    resolution:
+      integrity: sha512-2yNbQsQl5PI36l5WzHQshwjBHPe5IeIcmidWad0E+wjyaAxGMLx5pBp5AgXY2JG9S9VQjFmmGmqJJBXn8tzu+w==
   /@microsoft/api-extractor-model/7.3.4:
     dependencies:
       '@microsoft/node-core-library': 3.14.1
@@ -410,6 +471,34 @@ packages:
     hasBin: true
     resolution:
       integrity: sha512-i/hBovsbk1btBIQFWHHbAQdcXxL07+nYwF6wxDabtM+rJgySQ/flsjZJYXJV+ADlP0L3jyKdWZNF03M3zlQUlw==
+  /@microsoft/api-extractor/7.3.8:
+    dependencies:
+      '@microsoft/api-extractor-model': 7.3.2
+      '@microsoft/node-core-library': 3.14.0
+      '@microsoft/ts-command-line': 4.2.7
+      '@microsoft/tsdoc': 0.12.12
+      colors: 1.2.5
+      lodash: 4.17.15
+      resolve: 1.8.1
+      source-map: 0.6.1
+      typescript: 3.5.3
+    dev: false
+    hasBin: true
+    resolution:
+      integrity: sha512-zw3HWmPW9vWWIoI3SPb2tuJ2suXVoF9ty37Mww+00I4gKLPPDooVad1kBiNtdjHXBj0QwYAOsGcfoBN9Qgt2bw==
+  /@microsoft/node-core-library/3.14.0:
+    dependencies:
+      '@types/fs-extra': 5.0.4
+      '@types/jju': 1.4.1
+      '@types/node': 8.5.8
+      '@types/z-schema': 3.16.31
+      colors: 1.2.5
+      fs-extra: 7.0.1
+      jju: 1.4.0
+      z-schema: 3.18.4
+    dev: false
+    resolution:
+      integrity: sha512-+gbTXTRfvR40hTH+C3Vno/RJ51sU/RZAyHb2bo9af8GCdOgxCxCs+qp2KCXklbpuolmIPFfbCmdTwv90yH5tJw==
   /@microsoft/node-core-library/3.14.1:
     dependencies:
       '@types/fs-extra': 5.0.4
@@ -432,6 +521,10 @@ packages:
     dev: false
     resolution:
       integrity: sha512-PwUMIIDl8oWyl64Y5DW5FAuoRk4KWTBZdk4FEh366KEm5xYFBQhCeatHGURIj8nEYm0Xb2coCrXF77dGDlp/Qw==
+  /@microsoft/tsdoc/0.12.12:
+    dev: false
+    resolution:
+      integrity: sha512-5EzH1gHIonvvgA/xWRmVAJmRkTQj/yayUXyr66hFwNZiFE4j7lP8is9YQeXhwxGZEjO1PVMblAmFF0CyjNtPGw==
   /@microsoft/tsdoc/0.12.14:
     dev: false
     resolution:
@@ -465,7 +558,7 @@ packages:
     dependencies:
       asn1.js: 5.2.0
       base64url: 3.0.1
-      elliptic: 6.5.1
+      elliptic: 6.5.0
     dev: false
     resolution:
       integrity: sha512-t5kWWCTkPgg24JWVuCTPMx7l13F7YHdxBeJkT1vmoHjROgiOIEAN8eeY+iRmP1Hwsx+S7U55HyuqSsECr08a8A==
@@ -488,29 +581,33 @@ packages:
   /@types/body-parser/1.17.1:
     dependencies:
       '@types/connect': 3.4.32
-      '@types/node': 8.10.53
+      '@types/node': 8.10.52
     dev: false
     resolution:
       integrity: sha512-RoX2EZjMiFMjZh9lmYrwgoP9RTpAjSHiJxdp4oidAQVO02T7HER3xj9UKue5534ULWeqVEkujhWcyvUce+d68w==
   /@types/chai-as-promised/7.1.2:
     dependencies:
-      '@types/chai': 4.2.1
+      '@types/chai': 4.2.0
     dev: false
     resolution:
       integrity: sha512-PO2gcfR3Oxa+u0QvECLe1xKXOqYTzCmWf0FhLhjREoW3fPAVamjihL7v1MOVLJLsnAMdLcjkfrs01yvDMwVK4Q==
   /@types/chai-string/1.4.2:
     dependencies:
-      '@types/chai': 4.2.1
+      '@types/chai': 4.2.0
     dev: false
     resolution:
       integrity: sha512-ld/1hV5qcPRGuwlPdvRfvM3Ka/iofOk2pH4VkasK4b1JJP1LjNmWWn0LsISf6RRzyhVOvs93rb9tM09e+UuF8Q==
+  /@types/chai/4.2.0:
+    dev: false
+    resolution:
+      integrity: sha512-zw8UvoBEImn392tLjxoavuonblX/4Yb9ha4KBU10FirCfwgzhKO0dvyJSF9ByxV1xK1r2AgnAi/tvQaLgxQqxA==
   /@types/chai/4.2.1:
     dev: false
     resolution:
       integrity: sha512-LDKlQW/V8bQr5p9aoHye9p7x9faxq0GVeWAkn/Zgyyn848LIAzuR1sHQjGmUBFUpINuGWDG2NTM/ofA2aLMIew==
   /@types/connect/3.4.32:
     dependencies:
-      '@types/node': 8.10.53
+      '@types/node': 8.10.52
     dev: false
     resolution:
       integrity: sha512-4r8qa0quOvh7lGD0pre62CAb1oni1OO6ecJLGCezTmhQ8Fz50Arx9RUszryR8KlgK6avuSXvviL6yWyViQABOg==
@@ -520,7 +617,7 @@ packages:
       integrity: sha512-Q1y515GcOdTHgagaVFhHnIFQ38ygs/kmxdNpvpou+raI9UO3YZcHDngBSYKQklcKlvA7iuQlmIKbzvmxcOE9CQ==
   /@types/dotenv/6.1.1:
     dependencies:
-      '@types/node': 8.10.53
+      '@types/node': 8.10.52
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+      karma: 4.2.0
+    dev: false
+    engines:
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+      lodash: 4.17.15
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+      karma: 4.2.0
+      log-symbols: 2.2.0
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+      karma: 4.2.0
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-  /karma-rollup-preprocessor/7.0.2_rollup@1.20.3:
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-      rollup: 1.20.3
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-  /karma-webpack/4.0.2_webpack@4.39.3:
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-      webpack-dev-middleware: 3.7.1_webpack@4.39.3
+      webpack: 4.39.2_webpack@4.39.2
+      webpack-dev-middleware: 3.7.0_webpack@4.39.2
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-    dev: false
-    engines:
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+      bluebird: 3.5.5
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+  /kind-of/1.1.0:
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+    engines:
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+    resolution:
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+  /kind-of/3.2.2:
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+    engines:
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+      terser: 4.2.0
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+  /webpack-dev-middleware/3.7.0_webpack@4.39.2:
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       mime: 2.4.4
-      mkdirp: 0.5.1
       range-parser: 1.2.1
-      webpack: 4.39.3_webpack@4.39.3
+      webpack: 4.39.2_webpack@4.39.2
       webpack-log: 2.0.0
     dev: false
     engines:
@@ -9730,7 +10124,7 @@ packages:
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     resolution:
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   /webpack-log/2.0.0:
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-  /webpack/4.39.3_webpack@4.39.3:
+  /webpack/4.39.2_webpack@4.39.2:
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       '@webassemblyjs/helper-module-context': 1.8.5
@@ -9769,7 +10163,7 @@ packages:
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       schema-utils: 1.0.0
       tapable: 1.1.3
-      terser-webpack-plugin: 1.4.1_webpack@4.39.3
+      terser-webpack-plugin: 1.4.1_webpack@4.39.2
       watchpack: 1.6.0
       webpack-sources: 1.4.3
     dev: false
@@ -9779,7 +10173,7 @@ packages:
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@@ -9909,22 +10303,13 @@ packages:
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-  /xml2js/0.4.22:
+  /xml2js/0.4.19:
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-      util.promisify: 1.0.0
-      xmlbuilder: 11.0.1
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-    engines:
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-  /xmlbuilder/11.0.1:
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-    engines:
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   'file:projects/abort-controller.tgz':
     dependencies:
-      '@microsoft/api-extractor': 7.3.11
+      '@microsoft/api-extractor': 7.3.8
       '@types/mocha': 5.2.7
-      '@types/node': 8.10.53
-      '@typescript-eslint/eslint-plugin': 2.1.0_3a8cea979a77aa77c321dad4153067ce
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-      eslint-config-prettier: 6.2.0_eslint@6.3.0
-      eslint-plugin-no-null: 1.0.2_eslint@6.3.0
+      eslint: 6.2.1
+      eslint-config-prettier: 6.1.0_eslint@6.2.1
+      eslint-plugin-no-null: 1.0.2_eslint@6.2.1
       eslint-plugin-no-only-tests: 2.3.1
       eslint-plugin-promise: 4.2.1
-      karma: 4.3.0
+      karma: 4.2.0
       karma-chrome-launcher: 3.1.0
       karma-coverage: 2.0.1
-      karma-edge-launcher: 0.4.2_karma@4.3.0
+      karma-edge-launcher: 0.4.2_karma@4.2.0
       karma-env-preprocessor: 0.1.1
       karma-firefox-launcher: 1.2.0
-      karma-ie-launcher: 1.0.0_karma@4.3.0
-      karma-junit-reporter: 1.2.0_karma@4.3.0
+      karma-ie-launcher: 1.0.0_karma@4.2.0
+      karma-junit-reporter: 1.2.0_karma@4.2.0
       karma-mocha: 1.3.0
-      karma-mocha-reporter: 2.2.5_karma@4.3.0
+      karma-mocha-reporter: 2.2.5_karma@4.2.0
       karma-remap-coverage: 0.1.5_karma-coverage@2.0.1
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@@ -10200,16 +10585,16 @@ packages:
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       prettier: 1.18.2
       rimraf: 3.0.0
-      rollup: 1.20.3
-      rollup-plugin-commonjs: 10.1.0_rollup@1.20.3
+      rollup: 1.20.1
+      rollup-plugin-commonjs: 10.0.2_rollup@1.20.1
       rollup-plugin-multi-entry: 2.1.0
-      rollup-plugin-node-resolve: 5.2.0_rollup@1.20.3
+      rollup-plugin-node-resolve: 5.2.0_rollup@1.20.1
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-      rollup-plugin-sourcemaps: 0.4.2_rollup@1.20.3
-      rollup-plugin-terser: 5.1.1_rollup@1.20.3
-      ts-node: 8.3.0_typescript@3.6.2
+      rollup-plugin-sourcemaps: 0.4.2_rollup@1.20.1
+      rollup-plugin-terser: 5.1.1_rollup@1.20.1
+      ts-node: 8.3.0_typescript@3.5.3
       tslib: 1.10.0
-      typescript: 3.6.2
+      typescript: 3.5.3
     dev: false
     name: '@rush-temp/abort-controller'
     resolution:
@@ -10250,34 +10635,34 @@ packages:
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     dependencies:
       '@types/async-lock': 1.1.1
-      '@types/chai': 4.2.1
+      '@types/chai': 4.2.0
       '@types/chai-as-promised': 7.1.2
       '@types/debug': 4.1.5
       '@types/dotenv': 6.1.1
       '@types/is-buffer': 2.0.0
       '@types/jssha': 2.0.0
       '@types/mocha': 5.2.7
-      '@types/node': 8.10.53
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+      '@typescript-eslint/parser': 2.0.0_eslint@6.2.1
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-      buffer: 5.4.2
+      buffer: 5.4.0
       chai: 4.2.0
       chai-as-promised: 7.1.1_chai@4.2.0
-      cross-env: 5.2.1
+      cross-env: 5.2.0
       debug: 4.1.1
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-      eslint: 6.3.0
-      eslint-config-prettier: 6.2.0_eslint@6.3.0
-      eslint-plugin-no-null: 1.0.2_eslint@6.3.0
+      eslint: 6.2.1
+      eslint-config-prettier: 6.1.0_eslint@6.2.1
+      eslint-plugin-no-null: 1.0.2_eslint@6.2.1
       eslint-plugin-no-only-tests: 2.3.1
       eslint-plugin-promise: 4.2.1
       events: 3.0.0
       is-buffer: 2.0.3
       jssha: 2.3.1
-      karma: 4.3.0
+      karma: 4.2.0
       karma-chrome-launcher: 3.1.0
       karma-mocha: 1.3.0
       mocha: 6.2.0
@@ -10290,22 +10675,22 @@ packages:
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       rhea-promise: 1.0.0
       rimraf: 3.0.0
-      rollup: 1.20.3
-      rollup-plugin-commonjs: 10.1.0_rollup@1.20.3
+      rollup: 1.20.1
+      rollup-plugin-commonjs: 10.0.2_rollup@1.20.1
       rollup-plugin-inject: 3.0.1
       rollup-plugin-json: 4.0.0
       rollup-plugin-multi-entry: 2.1.0
       rollup-plugin-node-globals: 1.4.0
-      rollup-plugin-node-resolve: 5.2.0_rollup@1.20.3
+      rollup-plugin-node-resolve: 5.2.0_rollup@1.20.1
       rollup-plugin-replace: 2.2.0
       rollup-plugin-shim: 1.0.0
-      rollup-plugin-sourcemaps: 0.4.2_rollup@1.20.3
-      rollup-plugin-terser: 5.1.1_rollup@1.20.3
-      sinon: 7.4.2
+      rollup-plugin-sourcemaps: 0.4.2_rollup@1.20.1
+      rollup-plugin-terser: 5.1.1_rollup@1.20.1
+      sinon: 7.4.1
       stream-browserify: 2.0.2
-      ts-node: 8.3.0_typescript@3.6.2
+      ts-node: 8.3.0_typescript@3.5.3
       tslib: 1.10.0
-      typescript: 3.6.2
+      typescript: 3.5.3
       url: 0.11.0
       util: 0.12.1
       ws: 7.1.2
@@ -10317,15 +10702,15 @@ packages:
     version: 0.0.0
   'file:projects/core-arm.tgz':
     dependencies:
-      '@types/chai': 4.2.1
+      '@types/chai': 4.2.0
       '@types/mocha': 5.2.7
-      '@types/node': 8.10.53
-      '@typescript-eslint/eslint-plugin': 2.1.0_3a8cea979a77aa77c321dad4153067ce
-      '@typescript-eslint/parser': 2.1.0_eslint@6.3.0
+      '@types/node': 8.10.52
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-      eslint: 6.3.0
-      eslint-config-prettier: 6.2.0_eslint@6.3.0
-      eslint-plugin-no-null: 1.0.2_eslint@6.3.0
+      eslint: 6.2.1
+      eslint-config-prettier: 6.1.0_eslint@6.2.1
+      eslint-plugin-no-null: 1.0.2_eslint@6.2.1
       eslint-plugin-no-only-tests: 2.3.1
       eslint-plugin-promise: 4.2.1
       mocha: 6.2.0
@@ -10334,14 +10719,14 @@ packages:
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       nyc: 14.1.1
       rimraf: 3.0.0
-      rollup: 1.20.3
-      rollup-plugin-node-resolve: 5.2.0_rollup@1.20.3
-      rollup-plugin-sourcemaps: 0.4.2_rollup@1.20.3
-      rollup-plugin-visualizer: 2.5.4_rollup@1.20.3
+      rollup: 1.20.1
+      rollup-plugin-node-resolve: 5.2.0_rollup@1.20.1
+      rollup-plugin-sourcemaps: 0.4.2_rollup@1.20.1
+      rollup-plugin-visualizer: 2.5.4_rollup@1.20.1
       shx: 0.3.2
-      ts-node: 8.3.0_typescript@3.6.2
+      ts-node: 8.3.0_typescript@3.5.3
       tslib: 1.10.0
-      typescript: 3.6.2
+      typescript: 3.5.3
       uglify-js: 3.6.0
       yarn: 1.17.3
     dev: false
@@ -10352,16 +10737,16 @@ packages:
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     dependencies:
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-      '@typescript-eslint/eslint-plugin': 2.1.0_3a8cea979a77aa77c321dad4153067ce
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-      eslint-config-prettier: 6.2.0_eslint@6.3.0
-      eslint-plugin-no-null: 1.0.2_eslint@6.3.0
+      '@types/node': 8.10.52
+      '@typescript-eslint/eslint-plugin': 2.0.0_3cafee28902d96627d4743e014bc28ff
+      '@typescript-eslint/parser': 2.0.0_eslint@6.2.1
+      eslint: 6.2.1
+      eslint-config-prettier: 6.1.0_eslint@6.2.1
+      eslint-plugin-no-null: 1.0.2_eslint@6.2.1
       eslint-plugin-no-only-tests: 2.3.1
       eslint-plugin-promise: 4.2.1
       prettier: 1.18.2
-      typescript: 3.6.2
+      typescript: 3.5.3
     dev: false
     name: '@rush-temp/core-asynciterator-polyfill'
     resolution:
@@ -10370,16 +10755,16 @@ packages:
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   'file:projects/core-auth.tgz':
     dependencies:
-      '@microsoft/api-extractor': 7.3.11
+      '@microsoft/api-extractor': 7.3.8
       '@types/mocha': 5.2.7
-      '@types/node': 8.10.53
-      '@typescript-eslint/eslint-plugin': 2.1.0_3a8cea979a77aa77c321dad4153067ce
-      '@typescript-eslint/parser': 2.1.0_eslint@6.3.0
+      '@types/node': 8.10.52
+      '@typescript-eslint/eslint-plugin': 2.0.0_3cafee28902d96627d4743e014bc28ff
+      '@typescript-eslint/parser': 2.0.0_eslint@6.2.1
       assert: 1.5.0
-      cross-env: 5.2.1
-      eslint: 6.3.0
-      eslint-config-prettier: 6.2.0_eslint@6.3.0
-      eslint-plugin-no-null: 1.0.2_eslint@6.3.0
+      cross-env: 5.2.0
+      eslint: 6.2.1
+      eslint-config-prettier: 6.1.0_eslint@6.2.1
+      eslint-plugin-no-null: 1.0.2_eslint@6.2.1
       eslint-plugin-no-only-tests: 2.3.1
       eslint-plugin-promise: 4.2.1
       inherits: 2.0.4
@@ -10388,17 +10773,17 @@ packages:
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       prettier: 1.18.2
       rimraf: 3.0.0
-      rollup: 1.20.3
-      rollup-plugin-commonjs: 10.1.0_rollup@1.20.3
+      rollup: 1.20.1
+      rollup-plugin-commonjs: 10.0.2_rollup@1.20.1
       rollup-plugin-json: 4.0.0
       rollup-plugin-multi-entry: 2.1.0
-      rollup-plugin-node-resolve: 5.2.0_rollup@1.20.3
+      rollup-plugin-node-resolve: 5.2.0_rollup@1.20.1
       rollup-plugin-replace: 2.2.0
-      rollup-plugin-sourcemaps: 0.4.2_rollup@1.20.3
-      rollup-plugin-terser: 5.1.1_rollup@1.20.3
-      rollup-plugin-visualizer: 2.5.4_rollup@1.20.3
+      rollup-plugin-sourcemaps: 0.4.2_rollup@1.20.1
+      rollup-plugin-terser: 5.1.1_rollup@1.20.1
+      rollup-plugin-visualizer: 2.5.4_rollup@1.20.1
       tslib: 1.10.0
-      typescript: 3.6.2
+      typescript: 3.5.3
       util: 0.12.1
     dev: false
     name: '@rush-temp/core-auth'
@@ -10409,42 +10794,43 @@ packages:
   'file:projects/core-http.tgz':
     dependencies:
       '@azure/logger-js': 1.3.2
-      '@types/chai': 4.2.1
+      '@types/chai': 4.2.0
       '@types/express': 4.17.1
       '@types/fetch-mock': 7.3.1
       '@types/glob': 7.1.1
       '@types/karma': 3.0.3
       '@types/mocha': 5.2.7
-      '@types/node': 8.10.53
+      '@types/node': 8.10.52
       '@types/node-fetch': 2.5.0
+      '@types/semver': 5.5.0
       '@types/sinon': 7.0.13
       '@types/tough-cookie': 2.3.5
       '@types/tunnel': 0.0.1
       '@types/uuid': 3.4.5
-      '@types/webpack': 4.39.1
+      '@types/webpack': 4.39.0
       '@types/webpack-dev-middleware': 2.0.3
       '@types/xml2js': 0.4.4
-      '@typescript-eslint/eslint-plugin': 2.1.0_3a8cea979a77aa77c321dad4153067ce
-      '@typescript-eslint/parser': 2.1.0_eslint@6.3.0
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-      eslint-config-prettier: 6.2.0_eslint@6.3.0
-      eslint-plugin-no-null: 1.0.2_eslint@6.3.0
+      eslint: 6.2.1
+      eslint-config-prettier: 6.1.0_eslint@6.2.1
+      eslint-plugin-no-null: 1.0.2_eslint@6.2.1
       eslint-plugin-no-only-tests: 2.3.1
       eslint-plugin-promise: 4.2.1
       express: 4.17.1
       fetch-mock: 7.3.9
-      form-data: 2.5.1
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       glob: 7.1.4
-      karma: 4.3.0
-      karma-chai: 0.1.0_chai@4.2.0+karma@4.3.0
+      karma: 4.2.0
+      karma-chai: 0.1.0_chai@4.2.0+karma@4.2.0
       karma-chrome-launcher: 3.1.0
       karma-mocha: 1.3.0
-      karma-rollup-preprocessor: 7.0.2_rollup@1.20.3
+      karma-rollup-preprocessor: 7.0.2_rollup@1.20.1
       karma-sourcemap-loader: 0.3.7
       karma-typescript-es6-transform: 4.1.1
-      karma-webpack: 4.0.2_webpack@4.39.3
+      karma-webpack: 4.0.2_webpack@4.39.2
       mocha: 6.2.0
       mocha-chrome: 2.0.0
       mocha-junit-reporter: 1.23.1_mocha@6.2.0
@@ -10456,30 +10842,31 @@ packages:
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       regenerator-runtime: 0.13.3
       rimraf: 3.0.0
-      rollup: 1.20.3
+      rollup: 1.20.1
       rollup-plugin-alias: 1.5.2
-      rollup-plugin-commonjs: 10.1.0_rollup@1.20.3
+      rollup-plugin-commonjs: 10.0.2_rollup@1.20.1
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-      rollup-plugin-node-resolve: 5.2.0_rollup@1.20.3
-      rollup-plugin-sourcemaps: 0.4.2_rollup@1.20.3
-      rollup-plugin-visualizer: 2.5.4_rollup@1.20.3
+      rollup-plugin-node-resolve: 5.2.0_rollup@1.20.1
+      rollup-plugin-sourcemaps: 0.4.2_rollup@1.20.1
+      rollup-plugin-visualizer: 2.5.4_rollup@1.20.1
+      semver: 5.7.1
       shx: 0.3.2
-      sinon: 7.4.2
-      terser: 4.2.1
+      sinon: 7.4.1
+      terser: 4.2.0
       tough-cookie: 3.0.1
-      ts-loader: 6.0.4_typescript@3.6.2
-      ts-node: 8.3.0_typescript@3.6.2
+      ts-loader: 6.0.4_typescript@3.5.3
+      ts-node: 8.3.0_typescript@3.5.3
       tslib: 1.10.0
       tunnel: 0.0.6
-      typescript: 3.6.2
+      typescript: 3.5.3
       uglify-js: 3.6.0
       uuid: 3.3.3
-      webpack: 4.39.3_webpack@4.39.3
-      webpack-cli: 3.3.7_webpack@4.39.3
-      webpack-dev-middleware: 3.7.1_webpack@4.39.3
+      webpack: 4.39.2_webpack@4.39.2
+      webpack-cli: 3.3.7_webpack@4.39.2
+      webpack-dev-middleware: 3.7.0_webpack@4.39.2
       xhr-mock: 2.5.0
-      xml2js: 0.4.22
+      xml2js: 0.4.19
       yarn: 1.17.3
     dev: false
     name: '@rush-temp/core-http'
@@ -10490,16 +10877,16 @@ packages:
   'file:projects/core-paging.tgz':
     dependencies:
       '@azure/core-asynciterator-polyfill': 1.0.0-preview.1
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+      '@typescript-eslint/parser': 2.0.0_eslint@6.2.1
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+      eslint-config-prettier: 6.1.0_eslint@6.2.1
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       eslint-plugin-no-only-tests: 2.3.1
       eslint-plugin-promise: 4.2.1
       prettier: 1.18.2
-      typescript: 3.6.2
+      typescript: 3.5.3
     dev: false
     name: '@rush-temp/core-paging'
     resolution:
@@ -10508,16 +10895,16 @@ packages:
     version: 0.0.0
   'file:projects/core-tracing.tgz':
     dependencies:
-      '@microsoft/api-extractor': 7.3.11
+      '@microsoft/api-extractor': 7.3.8
       '@types/mocha': 5.2.7
-      '@types/node': 8.10.53
-      '@typescript-eslint/eslint-plugin': 2.1.0_3a8cea979a77aa77c321dad4153067ce
-      '@typescript-eslint/parser': 2.1.0_eslint@6.3.0
+      '@types/node': 8.10.52
+      '@typescript-eslint/eslint-plugin': 2.0.0_3cafee28902d96627d4743e014bc28ff
+      '@typescript-eslint/parser': 2.0.0_eslint@6.2.1
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-      cross-env: 5.2.1
-      eslint: 6.3.0
-      eslint-config-prettier: 6.2.0_eslint@6.3.0
-      eslint-plugin-no-null: 1.0.2_eslint@6.3.0
+      cross-env: 5.2.0
+      eslint: 6.2.1
+      eslint-config-prettier: 6.1.0_eslint@6.2.1
+      eslint-plugin-no-null: 1.0.2_eslint@6.2.1
       eslint-plugin-no-only-tests: 2.3.1
       eslint-plugin-promise: 4.2.1
       inherits: 2.0.4
@@ -10526,17 +10913,17 @@ packages:
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       prettier: 1.18.2
       rimraf: 3.0.0
-      rollup: 1.20.3
-      rollup-plugin-commonjs: 10.1.0_rollup@1.20.3
+      rollup: 1.20.1
+      rollup-plugin-commonjs: 10.0.2_rollup@1.20.1
       rollup-plugin-json: 4.0.0
       rollup-plugin-multi-entry: 2.1.0
-      rollup-plugin-node-resolve: 5.2.0_rollup@1.20.3
+      rollup-plugin-node-resolve: 5.2.0_rollup@1.20.1
       rollup-plugin-replace: 2.2.0
-      rollup-plugin-sourcemaps: 0.4.2_rollup@1.20.3
-      rollup-plugin-terser: 5.1.1_rollup@1.20.3
-      rollup-plugin-visualizer: 2.5.4_rollup@1.20.3
+      rollup-plugin-sourcemaps: 0.4.2_rollup@1.20.1
+      rollup-plugin-terser: 5.1.1_rollup@1.20.1
+      rollup-plugin-visualizer: 2.5.4_rollup@1.20.1
       tslib: 1.10.0
-      typescript: 3.6.2
+      typescript: 3.5.3
       util: 0.12.1
     dev: false
     name: '@rush-temp/core-tracing'
@@ -10544,14 +10931,14 @@ packages:
       integrity: sha512-78rkxAffDWO3NFQY96u6b+9tqe/jsn1oB6qcAQs0V+7cgzcTSfpZyO/giuyZlD7KCeVJfMXQAAEj8XdZ27Hl6A==
       tarball: 'file:projects/core-tracing.tgz'
     version: 0.0.0
-  'file:projects/cosmos.tgz_webpack@4.39.3':
+  'file:projects/cosmos.tgz_webpack@4.39.2':
     dependencies:
       '@azure/cosmos-sign': 1.0.2
-      '@microsoft/api-extractor': 7.3.11
+      '@microsoft/api-extractor': 7.3.8
       '@types/debug': 4.1.5
       '@types/fast-json-stable-stringify': 2.0.0
       '@types/mocha': 5.2.7
-      '@types/node': 8.10.53
+      '@types/node': 8.10.52
       '@types/node-fetch': 2.5.0
       '@types/priorityqueuejs': 1.0.1
       '@types/semaphore': 1.1.0
@@ -10559,32 +10946,32 @@ packages:
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       '@types/underscore': 1.9.2
       '@types/uuid': 3.4.5
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-      '@typescript-eslint/parser': 2.1.0_eslint@6.3.0
+      '@typescript-eslint/eslint-plugin': 2.0.0_3cafee28902d96627d4743e014bc28ff
+      '@typescript-eslint/parser': 2.0.0_eslint@6.2.1
       abort-controller: 3.0.0
       atob: 2.1.2
       binary-search-bounds: 2.0.3
-      cross-env: 5.2.1
+      cross-env: 5.2.0
       crypto-hash: 1.1.0
       debug: 4.1.1
       dotenv: 8.1.0
-      eslint: 6.3.0
-      eslint-config-prettier: 6.2.0_eslint@6.3.0
-      eslint-plugin-no-null: 1.0.2_eslint@6.3.0
+      eslint: 6.2.1
+      eslint-config-prettier: 6.1.0_eslint@6.2.1
+      eslint-plugin-no-null: 1.0.2_eslint@6.2.1
       eslint-plugin-no-only-tests: 2.3.1
       eslint-plugin-promise: 4.2.1
       esm: 3.2.18
       execa: 1.0.0
       fast-json-stable-stringify: 2.0.0
-      karma: 4.3.0
+      karma: 4.2.0
       karma-chrome-launcher: 3.1.0
       karma-cli: 2.0.0
       karma-firefox-launcher: 1.2.0
       karma-mocha: 1.3.0
-      karma-mocha-reporter: 2.2.5_karma@4.3.0
-      karma-requirejs: 1.1.0_karma@4.3.0+requirejs@2.3.6
+      karma-mocha-reporter: 2.2.5_karma@4.2.0
+      karma-requirejs: 1.1.0_karma@4.2.0+requirejs@2.3.6
       karma-sourcemap-loader: 0.3.7
-      karma-webpack: 4.0.2_webpack@4.39.3
+      karma-webpack: 4.0.2_webpack@4.39.2
       mocha: 6.2.0
       mocha-junit-reporter: 1.23.1_mocha@6.2.0
       mocha-multi: 1.1.3_mocha@6.2.0
@@ -10595,17 +10982,17 @@ packages:
       proxy-agent: 3.0.3
       requirejs: 2.3.6
       rimraf: 3.0.0
-      rollup: 1.20.3
+      rollup: 1.20.1
       rollup-plugin-json: 4.0.0
       rollup-plugin-local-resolve: 1.0.7
       rollup-plugin-multi-entry: 2.1.0
       semaphore: 1.0.5
-      sinon: 7.4.2
+      sinon: 7.4.1
       source-map-support: 0.5.13
-      ts-node: 8.3.0_typescript@3.6.2
+      ts-node: 8.3.0_typescript@3.5.3
       tslib: 1.10.0
       typedoc: 0.15.0
-      typescript: 3.6.2
+      typescript: 3.5.3
       universal-user-agent: 2.1.0
       uuid: 3.3.3
     dev: false
@@ -10620,47 +11007,47 @@ packages:
   'file:projects/event-hubs.tgz':
     dependencies:
       '@azure/core-asynciterator-polyfill': 1.0.0-preview.1
-      '@microsoft/api-extractor': 7.3.11
+      '@microsoft/api-extractor': 7.3.8
       '@types/async-lock': 1.1.1
-      '@types/chai': 4.2.1
+      '@types/chai': 4.2.0
       '@types/chai-as-promised': 7.1.2
       '@types/chai-string': 1.4.2
       '@types/debug': 4.1.5
       '@types/dotenv': 6.1.1
       '@types/long': 4.0.0
       '@types/mocha': 5.2.7
-      '@types/node': 8.10.53
+      '@types/node': 8.10.52
       '@types/uuid': 3.4.5
       '@types/ws': 6.0.3
-      '@typescript-eslint/eslint-plugin': 2.1.0_3a8cea979a77aa77c321dad4153067ce
-      '@typescript-eslint/parser': 2.1.0_eslint@6.3.0
+      '@typescript-eslint/eslint-plugin': 2.0.0_3cafee28902d96627d4743e014bc28ff
+      '@typescript-eslint/parser': 2.0.0_eslint@6.2.1
       assert: 1.5.0
       async-lock: 1.2.2
-      buffer: 5.4.2
+      buffer: 5.4.0
       chai: 4.2.0
       chai-as-promised: 7.1.1_chai@4.2.0
       chai-string: 1.5.0_chai@4.2.0
-      cross-env: 5.2.1
+      cross-env: 5.2.0
       debug: 4.1.1
       dotenv: 8.1.0
-      eslint: 6.3.0
-      eslint-config-prettier: 6.2.0_eslint@6.3.0
-      eslint-plugin-no-null: 1.0.2_eslint@6.3.0
+      eslint: 6.2.1
+      eslint-config-prettier: 6.1.0_eslint@6.2.1
+      eslint-plugin-no-null: 1.0.2_eslint@6.2.1
       eslint-plugin-no-only-tests: 2.3.1
       eslint-plugin-promise: 4.2.1
       https-proxy-agent: 2.2.2
       is-buffer: 2.0.3
       jssha: 2.3.1
-      karma: 4.3.0
+      karma: 4.2.0
       karma-chrome-launcher: 3.1.0
       karma-coverage: 2.0.1
-      karma-edge-launcher: 0.4.2_karma@4.3.0
+      karma-edge-launcher: 0.4.2_karma@4.2.0
       karma-env-preprocessor: 0.1.1
       karma-firefox-launcher: 1.2.0
-      karma-ie-launcher: 1.0.0_karma@4.3.0
-      karma-junit-reporter: 1.2.0_karma@4.3.0
+      karma-ie-launcher: 1.0.0_karma@4.2.0
+      karma-junit-reporter: 1.2.0_karma@4.2.0
       karma-mocha: 1.3.0
-      karma-mocha-reporter: 2.2.5_karma@4.3.0
+      karma-mocha-reporter: 2.2.5_karma@4.2.0
       karma-remap-coverage: 0.1.5_karma-coverage@2.0.1
       mocha: 6.2.0
       mocha-junit-reporter: 1.23.1_mocha@6.2.0
@@ -10671,20 +11058,20 @@ packages:
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       rhea-promise: 1.0.0
       rimraf: 3.0.0
-      rollup: 1.20.3
-      rollup-plugin-commonjs: 10.1.0_rollup@1.20.3
+      rollup: 1.20.1
+      rollup-plugin-commonjs: 10.0.2_rollup@1.20.1
       rollup-plugin-inject: 3.0.1
       rollup-plugin-json: 4.0.0
       rollup-plugin-multi-entry: 2.1.0
-      rollup-plugin-node-resolve: 5.2.0_rollup@1.20.3
+      rollup-plugin-node-resolve: 5.2.0_rollup@1.20.1
       rollup-plugin-replace: 2.2.0
       rollup-plugin-shim: 1.0.0
-      rollup-plugin-sourcemaps: 0.4.2_rollup@1.20.3
-      rollup-plugin-terser: 5.1.1_rollup@1.20.3
+      rollup-plugin-sourcemaps: 0.4.2_rollup@1.20.1
+      rollup-plugin-terser: 5.1.1_rollup@1.20.1
       ts-mocha: 6.0.0_mocha@6.2.0
-      ts-node: 8.3.0_typescript@3.6.2
+      ts-node: 8.3.0_typescript@3.5.3
       tslib: 1.10.0
-      typescript: 3.6.2
+      typescript: 3.5.3
       uuid: 3.3.3
       ws: 7.1.2
     dev: false
@@ -10697,30 +11084,30 @@ packages:
     dependencies:
       '@azure/event-hubs': 2.1.1
       '@azure/ms-rest-nodeauth': 0.9.3
-      '@microsoft/api-extractor': 7.3.11
+      '@microsoft/api-extractor': 7.3.8
       '@types/async-lock': 1.1.1
-      '@types/chai': 4.2.1
+      '@types/chai': 4.2.0
       '@types/chai-as-promised': 7.1.2
       '@types/chai-string': 1.4.2
       '@types/debug': 4.1.5
       '@types/dotenv': 6.1.1
       '@types/mocha': 5.2.7
-      '@types/node': 8.10.53
+      '@types/node': 8.10.52
       '@types/uuid': 3.4.5
       '@types/ws': 6.0.3
-      '@typescript-eslint/eslint-plugin': 2.1.0_3a8cea979a77aa77c321dad4153067ce
-      '@typescript-eslint/parser': 2.1.0_eslint@6.3.0
+      '@typescript-eslint/eslint-plugin': 2.0.0_3cafee28902d96627d4743e014bc28ff
+      '@typescript-eslint/parser': 2.0.0_eslint@6.2.1
       async-lock: 1.2.2
       azure-storage: 2.10.3
       chai: 4.2.0
       chai-as-promised: 7.1.1_chai@4.2.0
       chai-string: 1.5.0_chai@4.2.0
-      cross-env: 5.2.1
+      cross-env: 5.2.0
       debug: 4.1.1
       dotenv: 8.1.0
-      eslint: 6.3.0
-      eslint-config-prettier: 6.2.0_eslint@6.3.0
-      eslint-plugin-no-null: 1.0.2_eslint@6.3.0
+      eslint: 6.2.1
+      eslint-config-prettier: 6.1.0_eslint@6.2.1
+      eslint-plugin-no-null: 1.0.2_eslint@6.2.1
       eslint-plugin-no-only-tests: 2.3.1
       eslint-plugin-promise: 4.2.1
       https-proxy-agent: 2.2.2
@@ -10731,17 +11118,17 @@ packages:
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       prettier: 1.18.2
       rimraf: 3.0.0
-      rollup: 1.20.3
-      rollup-plugin-commonjs: 10.1.0_rollup@1.20.3
+      rollup: 1.20.1
+      rollup-plugin-commonjs: 10.0.2_rollup@1.20.1
       rollup-plugin-json: 4.0.0
       rollup-plugin-multi-entry: 2.1.0
-      rollup-plugin-node-resolve: 5.2.0_rollup@1.20.3
+      rollup-plugin-node-resolve: 5.2.0_rollup@1.20.1
       rollup-plugin-replace: 2.2.0
-      rollup-plugin-sourcemaps: 0.4.2_rollup@1.20.3
-      rollup-plugin-uglify: 6.0.3_rollup@1.20.3
-      ts-node: 8.3.0_typescript@3.6.2
+      rollup-plugin-sourcemaps: 0.4.2_rollup@1.20.1
+      rollup-plugin-uglify: 6.0.2_rollup@1.20.1
+      ts-node: 8.3.0_typescript@3.5.3
       tslib: 1.10.0
-      typescript: 3.6.2
+      typescript: 3.5.3
       uuid: 3.3.3
       ws: 7.1.2
     dev: false
@@ -10750,27 +11137,41 @@ packages:
       integrity: sha512-p3sNIrFFM3fCUUYcXbrj4RLVMuh84XX8jipT7xc9Nyd+4pVouE11Xewed7jDfUjHm9CeVCBFqReHpd2OgcnTAw==
       tarball: 'file:projects/event-processor-host.tgz'
     version: 0.0.0
-  'file:projects/identity.tgz':
+  'file:projects/eventhubs-checkpoint-blob.tgz':
     dependencies:
-      '@types/jws': 3.2.0
+      '@azure/storage-blob': 12.0.0-preview.2
+      '@microsoft/api-extractor': 7.3.11
+      '@types/chai': 4.2.1
+      '@types/chai-as-promised': 7.1.2
+      '@types/chai-string': 1.4.2
+      '@types/debug': 4.1.5
+      '@types/dotenv': 6.1.1
       '@types/mocha': 5.2.7
       '@types/node': 8.10.53
-      '@types/qs': 6.5.3
-      '@types/uuid': 3.4.5
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       '@typescript-eslint/parser': 2.1.0_eslint@6.3.0
       assert: 1.5.0
+      chai: 4.2.0
+      chai-as-promised: 7.1.1_chai@4.2.0
+      chai-string: 1.5.0_chai@4.2.0
       cross-env: 5.2.1
+      debug: 4.1.1
+      dotenv: 8.1.0
       eslint: 6.3.0
+      eslint-config-prettier: 6.2.0_eslint@6.3.0
+      eslint-plugin-no-null: 1.0.2_eslint@6.3.0
+      eslint-plugin-no-only-tests: 2.3.1
+      eslint-plugin-promise: 4.2.1
       events: 3.0.0
+      guid-typescript: 1.0.9
       inherits: 2.0.4
-      jws: 3.2.2
       karma: 4.3.0
       karma-chrome-launcher: 3.1.0
       karma-coverage: 2.0.1
+      karma-edge-launcher: 0.4.2_karma@4.3.0
       karma-env-preprocessor: 0.1.1
-      karma-json-preprocessor: 0.3.3_karma@4.3.0
-      karma-json-to-file-reporter: 1.0.1
+      karma-firefox-launcher: 1.2.0
+      karma-ie-launcher: 1.0.0_karma@4.3.0
       karma-junit-reporter: 1.2.0_karma@4.3.0
       karma-mocha: 1.3.0
       karma-mocha-reporter: 2.2.5_karma@4.3.0
@@ -10778,10 +11179,7 @@ packages:
       mocha: 6.2.0
       mocha-junit-reporter: 1.23.1_mocha@6.2.0
       mocha-multi: 1.1.3_mocha@6.2.0
-      msal: 1.1.3
       prettier: 1.18.2
-      puppeteer: 1.19.0
-      qs: 6.8.0
       rimraf: 3.0.0
       rollup: 1.20.3
       rollup-plugin-commonjs: 10.1.0_rollup@1.20.3
@@ -10792,9 +11190,61 @@ packages:
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       rollup-plugin-terser: 5.1.1_rollup@1.20.3
       rollup-plugin-visualizer: 2.5.4_rollup@1.20.3
+      ts-node: 8.3.0_typescript@3.6.2
       tslib: 1.10.0
       typescript: 3.6.2
       util: 0.12.1
+    dev: false
+    name: '@rush-temp/eventhubs-checkpoint-blob'
+    resolution:
+      integrity: sha512-KYKzpBLsTq5V9kqYVa2Drk3ImzzLgNmgp16kRWImKsyTP9j+b9qT9stPaLQhoUasXZOgSV5cETRhOW43jRcmeQ==
+      tarball: 'file:projects/eventhubs-checkpoint-blob.tgz'
+    version: 0.0.0
+  'file:projects/identity.tgz':
+    dependencies:
+      '@types/jws': 3.2.0
+      '@types/mocha': 5.2.7
+      '@types/node': 8.10.52
+      '@types/qs': 6.5.3
+      '@types/uuid': 3.4.5
+      '@typescript-eslint/eslint-plugin': 2.0.0_3cafee28902d96627d4743e014bc28ff
+      '@typescript-eslint/parser': 2.0.0_eslint@6.2.1
+      assert: 1.5.0
+      cross-env: 5.2.0
+      eslint: 6.2.1
+      events: 3.0.0
+      inherits: 2.0.4
+      jws: 3.2.2
+      karma: 4.2.0
+      karma-chrome-launcher: 3.1.0
+      karma-coverage: 2.0.1
+      karma-env-preprocessor: 0.1.1
+      karma-json-preprocessor: 0.3.3_karma@4.2.0
+      karma-json-to-file-reporter: 1.0.1
+      karma-junit-reporter: 1.2.0_karma@4.2.0
+      karma-mocha: 1.3.0
+      karma-mocha-reporter: 2.2.5_karma@4.2.0
+      karma-remap-coverage: 0.1.5_karma-coverage@2.0.1
+      mocha: 6.2.0
+      mocha-junit-reporter: 1.23.1_mocha@6.2.0
+      mocha-multi: 1.1.3_mocha@6.2.0
+      msal: 1.1.3
+      prettier: 1.18.2
+      puppeteer: 1.19.0
+      qs: 6.8.0
+      rimraf: 3.0.0
+      rollup: 1.20.1
+      rollup-plugin-commonjs: 10.0.2_rollup@1.20.1
+      rollup-plugin-json: 4.0.0
+      rollup-plugin-multi-entry: 2.1.0
+      rollup-plugin-node-resolve: 5.2.0_rollup@1.20.1
+      rollup-plugin-replace: 2.2.0
+      rollup-plugin-sourcemaps: 0.4.2_rollup@1.20.1
+      rollup-plugin-terser: 5.1.1_rollup@1.20.1
+      rollup-plugin-visualizer: 2.5.4_rollup@1.20.1
+      tslib: 1.10.0
+      typescript: 3.5.3
+      util: 0.12.1
       uuid: 3.3.3
     dev: false
     name: '@rush-temp/identity'
@@ -10804,62 +11254,64 @@ packages:
     version: 0.0.0
   'file:projects/keyvault-certificates.tgz':
     dependencies:
-      '@microsoft/api-extractor': 7.3.11
-      '@types/chai': 4.2.1
+      '@azure/core-paging': 1.0.0-preview.1
+      '@azure/core-tracing': 1.0.0-preview.1
+      '@microsoft/api-extractor': 7.3.8
+      '@types/chai': 4.2.0
       '@types/dotenv': 6.1.1
       '@types/fs-extra': 8.0.0
       '@types/mocha': 5.2.7
       '@types/nise': 1.4.0
       '@types/nock': 10.0.3
-      '@types/node': 8.10.53
+      '@types/node': 8.10.52
       '@types/query-string': 6.2.0
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       karma-chrome-launcher: 3.1.0
       karma-coverage: 2.0.1
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       karma-json-to-file-reporter: 1.0.1
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       karma-mocha: 1.3.0
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       karma-remap-coverage: 0.1.5_karma-coverage@2.0.1
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       mocha-junit-reporter: 1.23.1_mocha@6.2.0
       mocha-multi: 1.1.3_mocha@6.2.0
-      nise: 1.5.2
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       nyc: 14.1.1
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       puppeteer: 1.19.0
       query-string: 5.1.1
       rimraf: 3.0.0
-      rollup: 1.20.3
-      rollup-plugin-commonjs: 10.1.0_rollup@1.20.3
+      rollup: 1.20.1
+      rollup-plugin-commonjs: 10.0.2_rollup@1.20.1
       rollup-plugin-multi-entry: 2.1.0
-      rollup-plugin-node-resolve: 5.2.0_rollup@1.20.3
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       rollup-plugin-shim: 1.0.0
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-      rollup-plugin-terser: 5.1.1_rollup@1.20.3
-      rollup-plugin-visualizer: 2.5.4_rollup@1.20.3
+      rollup-plugin-sourcemaps: 0.4.2_rollup@1.20.1
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+      rollup-plugin-visualizer: 2.5.4_rollup@1.20.1
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       uglify-js: 3.6.0
       url: 0.11.0
     dev: false
@@ -10870,63 +11322,65 @@ packages:
     version: 0.0.0
   'file:projects/keyvault-keys.tgz':
     dependencies:
-      '@microsoft/api-extractor': 7.3.11
+      '@azure/core-paging': 1.0.0-preview.1
+      '@azure/core-tracing': 1.0.0-preview.1
+      '@microsoft/api-extractor': 7.3.8
       '@trust/keyto': 0.3.7
-      '@types/chai': 4.2.1
+      '@types/chai': 4.2.0
       '@types/dotenv': 6.1.1
       '@types/fs-extra': 8.0.0
       '@types/mocha': 5.2.7
       '@types/nise': 1.4.0
       '@types/nock': 10.0.3
-      '@types/node': 8.10.53
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       '@types/query-string': 6.2.0
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-      '@typescript-eslint/parser': 2.1.0_eslint@6.3.0
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+      '@typescript-eslint/parser': 2.0.0_eslint@6.2.1
       assert: 1.5.0
       chai: 4.2.0
-      cross-env: 5.2.1
+      cross-env: 5.2.0
       dotenv: 8.1.0
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-      eslint-config-prettier: 6.2.0_eslint@6.3.0
-      eslint-plugin-no-null: 1.0.2_eslint@6.3.0
+      eslint: 6.2.1
+      eslint-config-prettier: 6.1.0_eslint@6.2.1
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       eslint-plugin-no-only-tests: 2.3.1
       eslint-plugin-promise: 4.2.1
       fs-extra: 8.1.0
-      karma: 4.3.0
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       karma-chrome-launcher: 3.1.0
       karma-coverage: 2.0.1
-      karma-edge-launcher: 0.4.2_karma@4.3.0
+      karma-edge-launcher: 0.4.2_karma@4.2.0
       karma-env-preprocessor: 0.1.1
       karma-firefox-launcher: 1.2.0
-      karma-ie-launcher: 1.0.0_karma@4.3.0
-      karma-json-preprocessor: 0.3.3_karma@4.3.0
+      karma-ie-launcher: 1.0.0_karma@4.2.0
+      karma-json-preprocessor: 0.3.3_karma@4.2.0
       karma-json-to-file-reporter: 1.0.1
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       karma-mocha: 1.3.0
-      karma-mocha-reporter: 2.2.5_karma@4.3.0
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       karma-remap-coverage: 0.1.5_karma-coverage@2.0.1
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       mocha-junit-reporter: 1.23.1_mocha@6.2.0
       mocha-multi: 1.1.3_mocha@6.2.0
-      nise: 1.5.2
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       nock: 11.3.2
       nyc: 14.1.1
       prettier: 1.18.2
       puppeteer: 1.19.0
       query-string: 5.1.1
       rimraf: 3.0.0
-      rollup: 1.20.3
-      rollup-plugin-commonjs: 10.1.0_rollup@1.20.3
+      rollup: 1.20.1
+      rollup-plugin-commonjs: 10.0.2_rollup@1.20.1
       rollup-plugin-multi-entry: 2.1.0
-      rollup-plugin-node-resolve: 5.2.0_rollup@1.20.3
+      rollup-plugin-node-resolve: 5.2.0_rollup@1.20.1
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       rollup-plugin-shim: 1.0.0
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-      rollup-plugin-terser: 5.1.1_rollup@1.20.3
-      rollup-plugin-visualizer: 2.5.4_rollup@1.20.3
+      rollup-plugin-sourcemaps: 0.4.2_rollup@1.20.1
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     dev: false
@@ -10937,62 +11391,63 @@ packages:
     version: 0.0.0
   'file:projects/keyvault-secrets.tgz':
     dependencies:
-      '@microsoft/api-extractor': 7.3.11
-      '@types/chai': 4.2.1
+      '@azure/core-paging': 1.0.0-preview.1
+      '@microsoft/api-extractor': 7.3.8
+      '@types/chai': 4.2.0
       '@types/dotenv': 6.1.1
       '@types/fs-extra': 8.0.0
       '@types/mocha': 5.2.7
       '@types/nise': 1.4.0
       '@types/nock': 10.0.3
-      '@types/node': 8.10.53
+      '@types/node': 8.10.52
       '@types/query-string': 6.2.0
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-      '@typescript-eslint/parser': 2.1.0_eslint@6.3.0
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+      '@typescript-eslint/parser': 2.0.0_eslint@6.2.1
       assert: 1.5.0
       chai: 4.2.0
-      cross-env: 5.2.1
+      cross-env: 5.2.0
       dotenv: 8.1.0
-      eslint: 6.3.0
-      eslint-config-prettier: 6.2.0_eslint@6.3.0
-      eslint-plugin-no-null: 1.0.2_eslint@6.3.0
+      eslint: 6.2.1
+      eslint-config-prettier: 6.1.0_eslint@6.2.1
+      eslint-plugin-no-null: 1.0.2_eslint@6.2.1
       eslint-plugin-no-only-tests: 2.3.1
       eslint-plugin-promise: 4.2.1
       fs-extra: 8.1.0
-      karma: 4.3.0
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       karma-chrome-launcher: 3.1.0
       karma-coverage: 2.0.1
-      karma-edge-launcher: 0.4.2_karma@4.3.0
+      karma-edge-launcher: 0.4.2_karma@4.2.0
       karma-env-preprocessor: 0.1.1
       karma-firefox-launcher: 1.2.0
-      karma-ie-launcher: 1.0.0_karma@4.3.0
-      karma-json-preprocessor: 0.3.3_karma@4.3.0
+      karma-ie-launcher: 1.0.0_karma@4.2.0
+      karma-json-preprocessor: 0.3.3_karma@4.2.0
       karma-json-to-file-reporter: 1.0.1
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+      karma-junit-reporter: 1.2.0_karma@4.2.0
       karma-mocha: 1.3.0
-      karma-mocha-reporter: 2.2.5_karma@4.3.0
+      karma-mocha-reporter: 2.2.5_karma@4.2.0
       karma-remap-coverage: 0.1.5_karma-coverage@2.0.1
       mocha: 6.2.0
       mocha-junit-reporter: 1.23.1_mocha@6.2.0
       mocha-multi: 1.1.3_mocha@6.2.0
-      nise: 1.5.2
+      nise: 1.5.1
       nock: 11.3.2
       nyc: 14.1.1
       prettier: 1.18.2
       puppeteer: 1.19.0
       query-string: 5.1.1
       rimraf: 3.0.0
-      rollup: 1.20.3
-      rollup-plugin-commonjs: 10.1.0_rollup@1.20.3
+      rollup: 1.20.1
+      rollup-plugin-commonjs: 10.0.2_rollup@1.20.1
       rollup-plugin-multi-entry: 2.1.0
-      rollup-plugin-node-resolve: 5.2.0_rollup@1.20.3
+      rollup-plugin-node-resolve: 5.2.0_rollup@1.20.1
       rollup-plugin-replace: 2.2.0
       rollup-plugin-shim: 1.0.0
-      rollup-plugin-sourcemaps: 0.4.2_rollup@1.20.3
-      rollup-plugin-terser: 5.1.1_rollup@1.20.3
-      rollup-plugin-visualizer: 2.5.4_rollup@1.20.3
+      rollup-plugin-sourcemaps: 0.4.2_rollup@1.20.1
+      rollup-plugin-terser: 5.1.1_rollup@1.20.1
+      rollup-plugin-visualizer: 2.5.4_rollup@1.20.1
       source-map-support: 0.5.13
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-      typescript: 3.6.2
+      typescript: 3.5.3
       uglify-js: 3.6.0
       url: 0.11.0
     dev: false
@@ -11006,44 +11461,44 @@ packages:
       '@azure/amqp-common': 1.0.0-preview.6_rhea-promise@0.1.15
       '@azure/arm-servicebus': 3.2.0
       '@azure/ms-rest-nodeauth': 0.9.3
-      '@microsoft/api-extractor': 7.3.11
+      '@microsoft/api-extractor': 7.3.8
       '@types/async-lock': 1.1.1
-      '@types/chai': 4.2.1
+      '@types/chai': 4.2.0
       '@types/chai-as-promised': 7.1.2
       '@types/debug': 4.1.5
       '@types/dotenv': 6.1.1
       '@types/is-buffer': 2.0.0
       '@types/long': 4.0.0
       '@types/mocha': 5.2.7
-      '@types/node': 8.10.53
+      '@types/node': 8.10.52
       '@types/ws': 6.0.3
-      '@typescript-eslint/eslint-plugin': 2.1.0_3a8cea979a77aa77c321dad4153067ce
-      '@typescript-eslint/parser': 2.1.0_eslint@6.3.0
+      '@typescript-eslint/eslint-plugin': 2.0.0_3cafee28902d96627d4743e014bc28ff
+      '@typescript-eslint/parser': 2.0.0_eslint@6.2.1
       assert: 1.5.0
-      buffer: 5.4.2
+      buffer: 5.4.0
       chai: 4.2.0
       chai-as-promised: 7.1.1_chai@4.2.0
-      cross-env: 5.2.1
+      cross-env: 5.2.0
       debug: 4.1.1
       delay: 4.3.0
       dotenv: 8.1.0
-      eslint: 6.3.0
-      eslint-config-prettier: 6.2.0_eslint@6.3.0
-      eslint-plugin-no-null: 1.0.2_eslint@6.3.0
+      eslint: 6.2.1
+      eslint-config-prettier: 6.1.0_eslint@6.2.1
+      eslint-plugin-no-null: 1.0.2_eslint@6.2.1
       eslint-plugin-no-only-tests: 2.3.1
       eslint-plugin-promise: 4.2.1
       https-proxy-agent: 2.2.2
       is-buffer: 2.0.3
-      karma: 4.3.0
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       karma-chrome-launcher: 3.1.0
       karma-coverage: 2.0.1
-      karma-edge-launcher: 0.4.2_karma@4.3.0
+      karma-edge-launcher: 0.4.2_karma@4.2.0
       karma-env-preprocessor: 0.1.1
       karma-firefox-launcher: 1.2.0
-      karma-ie-launcher: 1.0.0_karma@4.3.0
-      karma-junit-reporter: 1.2.0_karma@4.3.0
+      karma-ie-launcher: 1.0.0_karma@4.2.0
+      karma-junit-reporter: 1.2.0_karma@4.2.0
       karma-mocha: 1.3.0
-      karma-mocha-reporter: 2.2.5_karma@4.3.0
+      karma-mocha-reporter: 2.2.5_karma@4.2.0
       karma-remap-coverage: 0.1.5_karma-coverage@2.0.1
       long: 4.0.0
       mocha: 6.2.0
@@ -11058,19 +11513,19 @@ packages:
       rhea: 1.0.8
       rhea-promise: 0.1.15
       rimraf: 3.0.0
-      rollup: 1.20.3
-      rollup-plugin-commonjs: 10.1.0_rollup@1.20.3
+      rollup: 1.20.1
+      rollup-plugin-commonjs: 10.0.2_rollup@1.20.1
       rollup-plugin-inject: 3.0.1
       rollup-plugin-json: 4.0.0
       rollup-plugin-multi-entry: 2.1.0
-      rollup-plugin-node-resolve: 5.2.0_rollup@1.20.3
+      rollup-plugin-node-resolve: 5.2.0_rollup@1.20.1
       rollup-plugin-replace: 2.2.0
       rollup-plugin-shim: 1.0.0
-      rollup-plugin-sourcemaps: 0.4.2_rollup@1.20.3
-      rollup-plugin-terser: 5.1.1_rollup@1.20.3
-      ts-node: 8.3.0_typescript@3.6.2
+      rollup-plugin-sourcemaps: 0.4.2_rollup@1.20.1
+      rollup-plugin-terser: 5.1.1_rollup@1.20.1
+      ts-node: 8.3.0_typescript@3.5.3
       tslib: 1.10.0
-      typescript: 3.6.2
+      typescript: 3.5.3
       ws: 7.1.2
     dev: false
     name: '@rush-temp/service-bus'
@@ -11081,23 +11536,23 @@ packages:
   'file:projects/storage-blob.tgz':
     dependencies:
       '@azure/ms-rest-js': 2.0.4
-      '@microsoft/api-extractor': 7.3.11
+      '@microsoft/api-extractor': 7.3.8
       '@types/dotenv': 6.1.1
       '@types/fs-extra': 8.0.0
       '@types/mocha': 5.2.7
       '@types/nise': 1.4.0
       '@types/nock': 10.0.3
-      '@types/node': 8.10.53
+      '@types/node': 8.10.52
       '@types/query-string': 6.2.0
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-      '@typescript-eslint/parser': 2.1.0_eslint@6.3.0
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+      '@typescript-eslint/parser': 2.0.0_eslint@6.2.1
       assert: 1.5.0
-      cross-env: 5.2.1
+      cross-env: 5.2.0
       dotenv: 8.1.0
       es6-promise: 4.2.8
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-      eslint-config-prettier: 6.2.0_eslint@6.3.0
-      eslint-plugin-no-null: 1.0.2_eslint@6.3.0
+      eslint: 6.2.1
+      eslint-config-prettier: 6.1.0_eslint@6.2.1
+      eslint-plugin-no-null: 1.0.2_eslint@6.2.1
       eslint-plugin-no-only-tests: 2.3.1
       eslint-plugin-promise: 4.2.1
       events: 3.0.0
@@ -11105,42 +11560,42 @@ packages:
       gulp: 4.0.2
       gulp-zip: 5.0.0_gulp@4.0.2
       inherits: 2.0.4
-      karma: 4.3.0
+      karma: 4.2.0
       karma-chrome-launcher: 3.1.0
       karma-coverage: 2.0.1
-      karma-edge-launcher: 0.4.2_karma@4.3.0
+      karma-edge-launcher: 0.4.2_karma@4.2.0
       karma-env-preprocessor: 0.1.1
       karma-firefox-launcher: 1.2.0
-      karma-ie-launcher: 1.0.0_karma@4.3.0
-      karma-json-preprocessor: 0.3.3_karma@4.3.0
+      karma-ie-launcher: 1.0.0_karma@4.2.0
+      karma-json-preprocessor: 0.3.3_karma@4.2.0
       karma-json-to-file-reporter: 1.0.1
-      karma-junit-reporter: 1.2.0_karma@4.3.0
+      karma-junit-reporter: 1.2.0_karma@4.2.0
       karma-mocha: 1.3.0
-      karma-mocha-reporter: 2.2.5_karma@4.3.0
+      karma-mocha-reporter: 2.2.5_karma@4.2.0
       karma-remap-coverage: 0.1.5_karma-coverage@2.0.1
       mocha: 6.2.0
       mocha-junit-reporter: 1.23.1_mocha@6.2.0
       mocha-multi: 1.1.3_mocha@6.2.0
-      nise: 1.5.2
+      nise: 1.5.1
       nock: 11.3.2
       nyc: 14.1.1
       prettier: 1.18.2
       puppeteer: 1.19.0
       query-string: 5.1.1
       rimraf: 3.0.0
-      rollup: 1.20.3
-      rollup-plugin-commonjs: 10.1.0_rollup@1.20.3
+      rollup: 1.20.1
+      rollup-plugin-commonjs: 10.0.2_rollup@1.20.1
       rollup-plugin-multi-entry: 2.1.0
-      rollup-plugin-node-resolve: 5.2.0_rollup@1.20.3
+      rollup-plugin-node-resolve: 5.2.0_rollup@1.20.1
       rollup-plugin-replace: 2.2.0
       rollup-plugin-shim: 1.0.0
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-      rollup-plugin-terser: 5.1.1_rollup@1.20.3
-      rollup-plugin-visualizer: 2.5.4_rollup@1.20.3
+      rollup-plugin-sourcemaps: 0.4.2_rollup@1.20.1
+      rollup-plugin-terser: 5.1.1_rollup@1.20.1
+      rollup-plugin-visualizer: 2.5.4_rollup@1.20.1
       source-map-support: 0.5.13
-      ts-node: 8.3.0_typescript@3.6.2
+      ts-node: 8.3.0_typescript@3.5.3
       tslib: 1.10.0
-      typescript: 3.6.2
+      typescript: 3.5.3
       util: 0.12.1
     dev: false
     name: '@rush-temp/storage-blob'
@@ -11151,23 +11606,23 @@ packages:
   'file:projects/storage-file.tgz':
     dependencies:
       '@azure/ms-rest-js': 2.0.4
-      '@microsoft/api-extractor': 7.3.11
+      '@microsoft/api-extractor': 7.3.8
       '@types/dotenv': 6.1.1
       '@types/fs-extra': 8.0.0
       '@types/mocha': 5.2.7
       '@types/nise': 1.4.0
       '@types/nock': 10.0.3
-      '@types/node': 8.10.53
+      '@types/node': 8.10.52
       '@types/query-string': 6.2.0
-      '@typescript-eslint/eslint-plugin': 2.1.0_3a8cea979a77aa77c321dad4153067ce
-      '@typescript-eslint/parser': 2.1.0_eslint@6.3.0
+      '@typescript-eslint/eslint-plugin': 2.0.0_3cafee28902d96627d4743e014bc28ff
+      '@typescript-eslint/parser': 2.0.0_eslint@6.2.1
       assert: 1.5.0
-      cross-env: 5.2.1
+      cross-env: 5.2.0
       dotenv: 8.1.0
       es6-promise: 4.2.8
-      eslint: 6.3.0
-      eslint-config-prettier: 6.2.0_eslint@6.3.0
-      eslint-plugin-no-null: 1.0.2_eslint@6.3.0
+      eslint: 6.2.1
+      eslint-config-prettier: 6.1.0_eslint@6.2.1
+      eslint-plugin-no-null: 1.0.2_eslint@6.2.1
       eslint-plugin-no-only-tests: 2.3.1
       eslint-plugin-promise: 4.2.1
       events: 3.0.0
@@ -11175,42 +11630,42 @@ packages:
       gulp: 4.0.2
       gulp-zip: 5.0.0_gulp@4.0.2
       inherits: 2.0.4
-      karma: 4.3.0
+      karma: 4.2.0
       karma-chrome-launcher: 3.1.0
       karma-coverage: 2.0.1
-      karma-edge-launcher: 0.4.2_karma@4.3.0
+      karma-edge-launcher: 0.4.2_karma@4.2.0
       karma-env-preprocessor: 0.1.1
       karma-firefox-launcher: 1.2.0
-      karma-ie-launcher: 1.0.0_karma@4.3.0
-      karma-json-preprocessor: 0.3.3_karma@4.3.0
+      karma-ie-launcher: 1.0.0_karma@4.2.0
+      karma-json-preprocessor: 0.3.3_karma@4.2.0
       karma-json-to-file-reporter: 1.0.1
-      karma-junit-reporter: 1.2.0_karma@4.3.0
+      karma-junit-reporter: 1.2.0_karma@4.2.0
       karma-mocha: 1.3.0
-      karma-mocha-reporter: 2.2.5_karma@4.3.0
+      karma-mocha-reporter: 2.2.5_karma@4.2.0
       karma-remap-coverage: 0.1.5_karma-coverage@2.0.1
       mocha: 6.2.0
       mocha-junit-reporter: 1.23.1_mocha@6.2.0
       mocha-multi: 1.1.3_mocha@6.2.0
-      nise: 1.5.2
+      nise: 1.5.1
       nock: 11.3.2
       nyc: 14.1.1
       prettier: 1.18.2
       puppeteer: 1.19.0
       query-string: 5.1.1
       rimraf: 3.0.0
-      rollup: 1.20.3
-      rollup-plugin-commonjs: 10.1.0_rollup@1.20.3
+      rollup: 1.20.1
+      rollup-plugin-commonjs: 10.0.2_rollup@1.20.1
       rollup-plugin-multi-entry: 2.1.0
-      rollup-plugin-node-resolve: 5.2.0_rollup@1.20.3
+      rollup-plugin-node-resolve: 5.2.0_rollup@1.20.1
       rollup-plugin-replace: 2.2.0
       rollup-plugin-shim: 1.0.0
-      rollup-plugin-sourcemaps: 0.4.2_rollup@1.20.3
-      rollup-plugin-terser: 5.1.1_rollup@1.20.3
-      rollup-plugin-visualizer: 2.5.4_rollup@1.20.3
+      rollup-plugin-sourcemaps: 0.4.2_rollup@1.20.1
+      rollup-plugin-terser: 5.1.1_rollup@1.20.1
+      rollup-plugin-visualizer: 2.5.4_rollup@1.20.1
       source-map-support: 0.5.13
-      ts-node: 8.3.0_typescript@3.6.2
+      ts-node: 8.3.0_typescript@3.5.3
       tslib: 1.10.0
-      typescript: 3.6.2
+      typescript: 3.5.3
       util: 0.12.1
     dev: false
     name: '@rush-temp/storage-file'
@@ -11221,65 +11676,65 @@ packages:
   'file:projects/storage-queue.tgz':
     dependencies:
       '@azure/ms-rest-js': 2.0.4
-      '@microsoft/api-extractor': 7.3.11
+      '@microsoft/api-extractor': 7.3.8
       '@types/dotenv': 6.1.1
       '@types/fs-extra': 8.0.0
       '@types/mocha': 5.2.7
       '@types/nise': 1.4.0
       '@types/nock': 10.0.3
-      '@types/node': 8.10.53
+      '@types/node': 8.10.52
       '@types/query-string': 6.2.0
-      '@typescript-eslint/eslint-plugin': 2.1.0_3a8cea979a77aa77c321dad4153067ce
-      '@typescript-eslint/parser': 2.1.0_eslint@6.3.0
+      '@typescript-eslint/eslint-plugin': 2.0.0_3cafee28902d96627d4743e014bc28ff
+      '@typescript-eslint/parser': 2.0.0_eslint@6.2.1
       assert: 1.5.0
-      cross-env: 5.2.1
+      cross-env: 5.2.0
       dotenv: 8.1.0
       es6-promise: 4.2.8
-      eslint: 6.3.0
-      eslint-config-prettier: 6.2.0_eslint@6.3.0
-      eslint-plugin-no-null: 1.0.2_eslint@6.3.0
+      eslint: 6.2.1
+      eslint-config-prettier: 6.1.0_eslint@6.2.1
+      eslint-plugin-no-null: 1.0.2_eslint@6.2.1
       eslint-plugin-no-only-tests: 2.3.1
       eslint-plugin-promise: 4.2.1
       fs-extra: 8.1.0
       gulp: 4.0.2
       gulp-zip: 5.0.0_gulp@4.0.2
       inherits: 2.0.4
-      karma: 4.3.0
+      karma: 4.2.0
       karma-chrome-launcher: 3.1.0
       karma-coverage: 2.0.1
-      karma-edge-launcher: 0.4.2_karma@4.3.0
+      karma-edge-launcher: 0.4.2_karma@4.2.0
       karma-env-preprocessor: 0.1.1
       karma-firefox-launcher: 1.2.0
-      karma-ie-launcher: 1.0.0_karma@4.3.0
-      karma-json-preprocessor: 0.3.3_karma@4.3.0
+      karma-ie-launcher: 1.0.0_karma@4.2.0
+      karma-json-preprocessor: 0.3.3_karma@4.2.0
       karma-json-to-file-reporter: 1.0.1
-      karma-junit-reporter: 1.2.0_karma@4.3.0
+      karma-junit-reporter: 1.2.0_karma@4.2.0
       karma-mocha: 1.3.0
-      karma-mocha-reporter: 2.2.5_karma@4.3.0
+      karma-mocha-reporter: 2.2.5_karma@4.2.0
       karma-remap-coverage: 0.1.5_karma-coverage@2.0.1
       mocha: 6.2.0
       mocha-junit-reporter: 1.23.1_mocha@6.2.0
       mocha-multi: 1.1.3_mocha@6.2.0
-      nise: 1.5.2
+      nise: 1.5.1
       nock: 11.3.2
       nyc: 14.1.1
       prettier: 1.18.2
       puppeteer: 1.19.0
       query-string: 5.1.1
       rimraf: 3.0.0
-      rollup: 1.20.3
-      rollup-plugin-commonjs: 10.1.0_rollup@1.20.3
+      rollup: 1.20.1
+      rollup-plugin-commonjs: 10.0.2_rollup@1.20.1
       rollup-plugin-multi-entry: 2.1.0
-      rollup-plugin-node-resolve: 5.2.0_rollup@1.20.3
+      rollup-plugin-node-resolve: 5.2.0_rollup@1.20.1
       rollup-plugin-replace: 2.2.0
       rollup-plugin-shim: 1.0.0
-      rollup-plugin-sourcemaps: 0.4.2_rollup@1.20.3
-      rollup-plugin-terser: 5.1.1_rollup@1.20.3
-      rollup-plugin-visualizer: 2.5.4_rollup@1.20.3
+      rollup-plugin-sourcemaps: 0.4.2_rollup@1.20.1
+      rollup-plugin-terser: 5.1.1_rollup@1.20.1
+      rollup-plugin-visualizer: 2.5.4_rollup@1.20.1
       source-map-support: 0.5.13
-      ts-node: 8.3.0_typescript@3.6.2
+      ts-node: 8.3.0_typescript@3.5.3
       tslib: 1.10.0
-      typescript: 3.6.2
+      typescript: 3.5.3
       util: 0.12.1
     dev: false
     name: '@rush-temp/storage-queue'
@@ -11289,47 +11744,47 @@ packages:
     version: 0.0.0
   'file:projects/template.tgz':
     dependencies:
-      '@microsoft/api-extractor': 7.3.11
+      '@microsoft/api-extractor': 7.3.8
       '@types/mocha': 5.2.7
-      '@types/node': 8.10.53
-      '@typescript-eslint/eslint-plugin': 2.1.0_3a8cea979a77aa77c321dad4153067ce
-      '@typescript-eslint/parser': 2.1.0_eslint@6.3.0
+      '@types/node': 8.10.52
+      '@typescript-eslint/eslint-plugin': 2.0.0_3cafee28902d96627d4743e014bc28ff
+      '@typescript-eslint/parser': 2.0.0_eslint@6.2.1
       assert: 1.5.0
-      cross-env: 5.2.1
-      eslint: 6.3.0
-      eslint-config-prettier: 6.2.0_eslint@6.3.0
-      eslint-plugin-no-null: 1.0.2_eslint@6.3.0
+      cross-env: 5.2.0
+      eslint: 6.2.1
+      eslint-config-prettier: 6.1.0_eslint@6.2.1
+      eslint-plugin-no-null: 1.0.2_eslint@6.2.1
       eslint-plugin-no-only-tests: 2.3.1
       eslint-plugin-promise: 4.2.1
       events: 3.0.0
       inherits: 2.0.4
-      karma: 4.3.0
+      karma: 4.2.0
       karma-chrome-launcher: 3.1.0
       karma-coverage: 2.0.1
-      karma-edge-launcher: 0.4.2_karma@4.3.0
+      karma-edge-launcher: 0.4.2_karma@4.2.0
       karma-env-preprocessor: 0.1.1
       karma-firefox-launcher: 1.2.0
-      karma-ie-launcher: 1.0.0_karma@4.3.0
-      karma-junit-reporter: 1.2.0_karma@4.3.0
+      karma-ie-launcher: 1.0.0_karma@4.2.0
+      karma-junit-reporter: 1.2.0_karma@4.2.0
       karma-mocha: 1.3.0
-      karma-mocha-reporter: 2.2.5_karma@4.3.0
+      karma-mocha-reporter: 2.2.5_karma@4.2.0
       karma-remap-coverage: 0.1.5_karma-coverage@2.0.1
       mocha: 6.2.0
       mocha-junit-reporter: 1.23.1_mocha@6.2.0
       mocha-multi: 1.1.3_mocha@6.2.0
       prettier: 1.18.2
       rimraf: 3.0.0
-      rollup: 1.20.3
-      rollup-plugin-commonjs: 10.1.0_rollup@1.20.3
+      rollup: 1.20.1
+      rollup-plugin-commonjs: 10.0.2_rollup@1.20.1
       rollup-plugin-json: 4.0.0
       rollup-plugin-multi-entry: 2.1.0
-      rollup-plugin-node-resolve: 5.2.0_rollup@1.20.3
+      rollup-plugin-node-resolve: 5.2.0_rollup@1.20.1
       rollup-plugin-replace: 2.2.0
-      rollup-plugin-sourcemaps: 0.4.2_rollup@1.20.3
-      rollup-plugin-terser: 5.1.1_rollup@1.20.3
-      rollup-plugin-visualizer: 2.5.4_rollup@1.20.3
+      rollup-plugin-sourcemaps: 0.4.2_rollup@1.20.1
+      rollup-plugin-terser: 5.1.1_rollup@1.20.1
+      rollup-plugin-visualizer: 2.5.4_rollup@1.20.1
       tslib: 1.10.0
-      typescript: 3.6.2
+      typescript: 3.5.3
       util: 0.12.1
     dev: false
     name: '@rush-temp/template'
@@ -11343,19 +11798,21 @@ packages:
       '@types/mocha': 5.2.7
       '@types/nise': 1.4.0
       '@types/nock': 10.0.3
+      '@types/query-string': 6.2.0
       fs-extra: 8.1.0
-      nise: 1.5.2
+      nise: 1.5.1
       nock: 11.3.2
+      query-string: 5.1.1
       rimraf: 3.0.0
-      rollup: 1.20.3
-      rollup-plugin-commonjs: 10.1.0_rollup@1.20.3
+      rollup: 1.20.1
+      rollup-plugin-commonjs: 10.0.2_rollup@1.20.1
       rollup-plugin-multi-entry: 2.1.0
-      rollup-plugin-node-resolve: 5.2.0_rollup@1.20.3
+      rollup-plugin-node-resolve: 5.2.0_rollup@1.20.1
       rollup-plugin-replace: 2.2.0
       rollup-plugin-shim: 1.0.0
-      rollup-plugin-sourcemaps: 0.4.2_rollup@1.20.3
-      rollup-plugin-terser: 5.1.1_rollup@1.20.3
-      rollup-plugin-visualizer: 2.5.4_rollup@1.20.3
+      rollup-plugin-sourcemaps: 0.4.2_rollup@1.20.1
+      rollup-plugin-terser: 5.1.1_rollup@1.20.1
+      rollup-plugin-visualizer: 2.5.4_rollup@1.20.1
       tslib: 1.10.0
     dev: false
     name: '@rush-temp/test-utils-recorder'
@@ -11366,7 +11823,7 @@ packages:
   'file:projects/testhub.tgz':
     dependencies:
       '@azure/event-hubs': 2.1.1
-      '@types/node': 8.10.53
+      '@types/node': 8.10.52
       '@types/uuid': 3.4.5
       '@types/yargs': 13.0.2
       async-lock: 1.2.2
@@ -11375,7 +11832,7 @@ packages:
       rhea: 1.0.8
       rimraf: 3.0.0
       tslib: 1.10.0
-      typescript: 3.6.2
+      typescript: 3.5.3
       uuid: 3.3.3
       yargs: 14.0.0
     dev: false
@@ -11394,6 +11851,7 @@ specifiers:
   '@azure/logger-js': ^1.0.2
   '@azure/ms-rest-js': ^2.0.0
   '@azure/ms-rest-nodeauth': ^0.9.2
+  '@azure/storage-blob': 12.0.0-preview.2
   '@microsoft/api-extractor': ^7.1.5
   '@rush-temp/abort-controller': 'file:./projects/abort-controller.tgz'
   '@rush-temp/app-configuration': 'file:./projects/app-configuration.tgz'
@@ -11407,6 +11865,7 @@ specifiers:
   '@rush-temp/cosmos': 'file:./projects/cosmos.tgz'
   '@rush-temp/event-hubs': 'file:./projects/event-hubs.tgz'
   '@rush-temp/event-processor-host': 'file:./projects/event-processor-host.tgz'
+  '@rush-temp/eventhubs-checkpoint-blob': 'file:./projects/eventhubs-checkpoint-blob.tgz'
   '@rush-temp/identity': 'file:./projects/identity.tgz'
   '@rush-temp/keyvault-certificates': 'file:./projects/keyvault-certificates.tgz'
   '@rush-temp/keyvault-keys': 'file:./projects/keyvault-keys.tgz'
@@ -11488,6 +11947,7 @@ specifiers:
   form-data: ^2.5.0
   fs-extra: ^8.1.0
   glob: ^7.1.2
+  guid-typescript: 1.0.9
   gulp: ^4.0.0
   gulp-zip: ^5.0.0
   https-proxy-agent: ^2.2.1
diff --git a/rush.json b/rush.json
index 43e1e2cf6eea..27e84d8d8410 100644
--- a/rush.json
+++ b/rush.json
@@ -362,6 +362,10 @@
       "packageName": "@azure/event-hubs",
       "projectFolder": "sdk/eventhub/event-hubs"
     },
+    {
+      "packageName": "@azure/eventhubs-checkpoint-blob",
+      "projectFolder": "sdk/eventhub/eventhubs-checkpoint-blob"
+    },
     {
       "packageName": "@azure/event-processor-host",
       "projectFolder": "sdk/eventhub/event-processor-host"
diff --git a/sdk/eventhub/event-hubs/.vscode/launch.json b/sdk/eventhub/event-hubs/.vscode/launch.json
index 8659ad4c95f6..c2a2c66ba1c0 100644
--- a/sdk/eventhub/event-hubs/.vscode/launch.json
+++ b/sdk/eventhub/event-hubs/.vscode/launch.json
@@ -11,7 +11,7 @@
             "program": "${workspaceFolder}/node_modules/mocha/bin/_mocha",
             "args": [
                 "-u",
-                "tdd",
+                "bdd",
                 "--timeout",
                 "999999",
                 "--colors",
diff --git a/sdk/eventhub/event-hubs/review/event-hubs.api.md b/sdk/eventhub/event-hubs/review/event-hubs.api.md
index b7c177fedea5..d4527581298c 100644
--- a/sdk/eventhub/event-hubs/review/event-hubs.api.md
+++ b/sdk/eventhub/event-hubs/review/event-hubs.api.md
@@ -181,13 +181,10 @@ export class EventProcessor {
     stop(): Promise<void>;
 }
 
-// @public (undocumented)
+// @public
 export interface EventProcessorOptions {
-    // (undocumented)
     initialEventPosition?: EventPosition;
-    // (undocumented)
     maxBatchSize?: number;
-    // (undocumented)
     maxWaitTimeInSeconds?: number;
 }
 
diff --git a/sdk/eventhub/eventhubs-checkpoint-blob/.vscode/launch.json b/sdk/eventhub/eventhubs-checkpoint-blob/.vscode/launch.json
new file mode 100644
index 000000000000..b8d737ba823b
--- /dev/null
+++ b/sdk/eventhub/eventhubs-checkpoint-blob/.vscode/launch.json
@@ -0,0 +1,36 @@
+{
+    // Use IntelliSense to learn about possible attributes.
+    // Hover to view descriptions of existing attributes.
+    // For more information, visit: https://go.microsoft.com/fwlink/?linkid=830387
+    "version": "0.2.0",
+    "configurations": [
+        {
+            "type": "node",
+            "request": "launch",
+            "name": "Client Unit Tests",
+            "program": "${workspaceFolder}/node_modules/mocha/bin/_mocha",
+            "args": [
+                "-u",
+                "bdd",
+                "--timeout",
+                "999999",
+                "--colors",
+                "${workspaceFolder}/test-dist/index.js"
+            ],
+            "internalConsoleOptions": "openOnSessionStart",
+            "preLaunchTask": "npm: build:test",
+            "envFile": "${workspaceFolder}/.env" // You can take a look at the sample.env file for supported environment variables.
+        },
+        {
+            "type": "node",
+            "request": "launch",
+            "name": "Client Example",
+            "program": "${file}",
+            "preLaunchTask": "npm: build:samples",
+            "outFiles": [
+                "${workspaceFolder}/dist-esm/**/*.js"
+            ],
+            "envFile": "${workspaceFolder}/.env" // You can take a look at the sample.env file for supported environment variables.
+        }
+    ]
+}
diff --git a/sdk/eventhub/eventhubs-checkpoint-blob/License b/sdk/eventhub/eventhubs-checkpoint-blob/License
new file mode 100644
index 000000000000..cbf2717d8cd3
--- /dev/null
+++ b/sdk/eventhub/eventhubs-checkpoint-blob/License
@@ -0,0 +1,22 @@
+    MIT License
+
+    Copyright (c) Microsoft Corporation. All rights reserved.
+
+    Permission is hereby granted, free of charge, to any person obtaining a copy
+    of this software and associated documentation files (the "Software"), to deal
+    in the Software without restriction, including without limitation the rights
+    to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+    copies of the Software, and to permit persons to whom the Software is
+    furnished to do so, subject to the following conditions:
+
+    The above copyright notice and this permission notice shall be included in all
+    copies or substantial portions of the Software.
+
+    THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+    IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+    FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+    AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+    LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+    OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+    SOFTWARE
+
diff --git a/sdk/eventhub/eventhubs-checkpoint-blob/README.md b/sdk/eventhub/eventhubs-checkpoint-blob/README.md
new file mode 100644
index 000000000000..d52d2847f2d3
--- /dev/null
+++ b/sdk/eventhub/eventhubs-checkpoint-blob/README.md
@@ -0,0 +1,19 @@
+# Azure Event Hubs checkpoint blob library for Javascript
+
+This template serves as a starting point for JavaScript libraries targeting both Node and the Browser and implemented in TypeScript.
+
+[Source code](https://github.com/Azure/azure-sdk-for-js/tree/master/sdk/eventhub/event-hubs/event-processor-host) | [Package (npm)](https://www.npmjs.com/package/@azure/eventhubs-checkpoint-blob) | [API Reference Documentation](https://azure.github.io/azure-sdk-for-js/event-processor-host/index.html) | [Product documentation](https://docs.microsoft.com/en-us/azure/event-hubs/event-hubs-event-processor-host) | [Samples](https://github.com/Azure/azure-sdk-for-js/tree/master/sdk/eventhub/event-hubs/event-processor-host/samples)
+
+## Getting Started
+
+## Key concepts
+
+## Examples
+
+## Troubleshooting
+
+## Enable logs
+
+## Next Steps
+
+## Contributing
diff --git a/sdk/eventhub/eventhubs-checkpoint-blob/api-extractor.json b/sdk/eventhub/eventhubs-checkpoint-blob/api-extractor.json
new file mode 100644
index 000000000000..f4626f520110
--- /dev/null
+++ b/sdk/eventhub/eventhubs-checkpoint-blob/api-extractor.json
@@ -0,0 +1,31 @@
+{
+  "$schema": "https://developer.microsoft.com/json-schemas/api-extractor/v7/api-extractor.schema.json",
+  "mainEntryPointFilePath": "typings/src/index.d.ts",
+  "docModel": {
+    "enabled": false
+  },
+  "apiReport": {
+    "enabled": true,
+    "reportFolder": "./review"
+  },
+  "dtsRollup": {
+    "enabled": true,
+    "untrimmedFilePath": "",
+    "publicTrimmedFilePath": "./typings/eventhubs-checkpoint-blob.d.ts"
+  },
+  "messages": {
+    "tsdocMessageReporting": {
+      "default": {
+        "logLevel": "none"
+      }
+    },
+    "extractorMessageReporting": {
+      "ae-missing-release-tag": {
+        "logLevel": "none"
+      },
+      "ae-unresolved-link": {
+        "logLevel": "none"
+      }
+    }
+  }
+}
diff --git a/sdk/eventhub/eventhubs-checkpoint-blob/changelog.md b/sdk/eventhub/eventhubs-checkpoint-blob/changelog.md
new file mode 100644
index 000000000000..e69de29bb2d1
diff --git a/sdk/eventhub/eventhubs-checkpoint-blob/karma.conf.js b/sdk/eventhub/eventhubs-checkpoint-blob/karma.conf.js
new file mode 100644
index 000000000000..f6c9a619ba18
--- /dev/null
+++ b/sdk/eventhub/eventhubs-checkpoint-blob/karma.conf.js
@@ -0,0 +1,118 @@
+// https://github.com/karma-runner/karma-chrome-launcher
+process.env.CHROME_BIN = require("puppeteer").executablePath();
+
+module.exports = function(config) {
+  config.set({
+    // base path that will be used to resolve all patterns (eg. files, exclude)
+    basePath: "./",
+
+    // frameworks to use
+    // available frameworks: https://npmjs.org/browse/keyword/karma-adapter
+    frameworks: ["mocha"],
+
+    plugins: [
+      "karma-mocha",
+      "karma-mocha-reporter",
+      "karma-chrome-launcher",
+      "karma-edge-launcher",
+      "karma-firefox-launcher",
+      "karma-ie-launcher",
+      "karma-env-preprocessor",
+      "karma-coverage",
+      "karma-remap-coverage",
+      "karma-junit-reporter"
+    ],
+
+    // list of files / patterns to load in the browser
+    files: [
+      // Uncomment the cdn link below for the polyfill service to support IE11 missing features
+      // Promise,String.prototype.startsWith,String.prototype.endsWith,String.prototype.repeat,String.prototype.includes,Array.prototype.includes,Object.keys
+      // "https://cdn.polyfill.io/v2/polyfill.js?features=Symbol,Promise,String.prototype.startsWith,String.prototype.endsWith,String.prototype.repeat,String.prototype.includes,Array.prototype.includes,Object.keys|always",
+      "dist-test/index.browser.js"
+    ],
+
+    // list of files / patterns to exclude
+    exclude: [],
+
+    // preprocess matching files before serving them to the browser
+    // available preprocessors: https://npmjs.org/browse/keyword/karma-preprocessor
+    preprocessors: {
+      "**/*.js": ["env"],
+      // IMPORTANT: COMMENT following line if you want to debug in your browsers!!
+      // Preprocess source file to calculate code coverage, however this will make source file unreadable
+      "test-browser/index.js": ["coverage"]
+    },
+
+    // inject following environment values into browser testing with window.__env__
+    // environment values MUST be exported or set with same console running "karma start"
+    // https://www.npmjs.com/package/karma-env-preprocessor
+    envPreprocessor: ["ACCOUNT_NAME", "ACCOUNT_SAS"],
+
+    // test results reporter to use
+    // possible values: 'dots', 'progress'
+    // available reporters: https://npmjs.org/browse/keyword/karma-reporter
+    reporters: ["mocha", "coverage", "remap-coverage", "junit"],
+
+    coverageReporter: { type: "in-memory" },
+
+    // Coverage report settings
+    remapCoverageReporter: {
+      "text-summary": null, // to show summary in console
+      html: "./coverage-browser",
+      cobertura: "./coverage-browser/cobertura-coverage.xml"
+    },
+
+    // Exclude coverage calculation for following files
+    remapOptions: {
+      exclude: /node_modules|test/g
+    },
+
+    junitReporter: {
+      outputDir: "", // results will be saved as $outputDir/$browserName.xml
+      outputFile: "test-results.browser.xml", // if included, results will be saved as $outputDir/$browserName/$outputFile
+      suite: "", // suite will become the package name attribute in xml testsuite element
+      useBrowserName: false, // add browser name to report and classes names
+      nameFormatter: undefined, // function (browser, result) to customize the name attribute in xml testcase element
+      classNameFormatter: undefined, // function (browser, result) to customize the classname attribute in xml testcase element
+      properties: {} // key value pair of properties to add to the <properties> section of the report
+    },
+
+    // web server port
+    port: 9876,
+
+    // enable / disable colors in the output (reporters and logs)
+    colors: true,
+
+    // level of logging
+    // possible values: config.LOG_DISABLE || config.LOG_ERROR || config.LOG_WARN || config.LOG_INFO || config.LOG_DEBUG
+    logLevel: config.LOG_INFO,
+
+    // enable / disable watching file and executing tests whenever any file changes
+    autoWatch: false,
+
+    // start these browsers
+    // available browser launchers: https://npmjs.org/browse/keyword/karma-launcher
+    // 'ChromeHeadless', 'Chrome', 'Firefox', 'Edge', 'IE'
+    browsers: ["ChromeHeadless"],
+
+    // Continuous Integration mode
+    // if true, Karma captures browsers, runs the tests and exits
+    singleRun: true,
+
+    // Concurrency level
+    // how many browser should be started simultaneous
+    concurrency: 1,
+
+    browserNoActivityTimeout: 600000,
+    browserDisconnectTimeout: 10000,
+    browserDisconnectTolerance: 3,
+
+    client: {
+      mocha: {
+        // change Karma's debug.html to the mocha web reporter
+        reporter: "html",
+        timeout: "600000"
+      }
+    }
+  });
+};
diff --git a/sdk/eventhub/eventhubs-checkpoint-blob/package.json b/sdk/eventhub/eventhubs-checkpoint-blob/package.json
new file mode 100644
index 000000000000..284653abc8f5
--- /dev/null
+++ b/sdk/eventhub/eventhubs-checkpoint-blob/package.json
@@ -0,0 +1,125 @@
+{
+  "name": "@azure/eventhubs-checkpoint-blob",
+  "sdk-type": "client",
+  "version": "1.0.0-preview.1",
+  "description": "Azure Event Hubs checkpoint blob for JS.",
+  "author": "Microsoft Corporation",
+  "license": "MIT",
+  "homepage": "https://github.com/Azure/azure-sdk-for-js/tree/master/sdk/eventhub",
+  "repository": "github:Azure/azure-sdk-for-js",
+  "sideEffects": false,
+  "keywords": [
+    "azure",
+    "cloud",
+    "event hubs",
+    "events"
+  ],
+  "bugs": {
+    "url": "https://github.com/azure/azure-sdk-for-js/issues"
+  },
+  "main": "./dist/index.js",
+  "module": "dist-esm/src/index.js",
+  "types": "./typings/eventhubs-checkpoint-blob.d.ts",
+  "browser": {
+    "./dist/index.js": "./browser/index.js"
+  },
+  "engine": {
+    "node": ">=8.0.0"
+  },
+  "files": [
+    "dist/",
+    "dist-esm/src/",
+    "src/",
+    "typings/eventhubs-checkpoint-blob.d.ts",
+    "tsconfig.json"
+  ],
+  "scripts": {
+    "audit": "node ../../../common/scripts/rush-audit.js && rimraf node_modules package-lock.json && npm i --package-lock-only 2>&1 && npm audit",
+    "build:browser": "tsc -p . && cross-env ONLY_BROWSER=true rollup -c 2>&1",
+    "build:node": "tsc -p . && cross-env ONLY_NODE=true rollup -c 2>&1",
+    "build:samples": "cd samples && tsc -p .",
+    "build:test:browser": "tsc -p . && cross-env ONLY_BROWSER=true rollup -c rollup.test.config.js 2>&1",
+    "build:test:node": "tsc -p . && cross-env ONLY_NODE=true rollup -c rollup.test.config.js 2>&1",
+    "build:test": "npm run build:test:node",
+    "build": "tsc -p . && rollup -c 2>&1 && npm run extract-api",
+    "check-format": "prettier --list-different --config ../../.prettierrc.json \"src/**/*.ts\" \"test/**/*.ts\" \"*.{js,json}\"",
+    "clean": "rimraf dist dist-esm test-dist typings *.tgz *.log",
+    "coverage": "nyc --reporter=lcov --exclude-after-remap=false mocha -t 120000 test-dist/index.js --reporter mocha-multi --reporter-options spec=-,mocha-junit-reporter=-",
+    "extract-api": "tsc -p . && api-extractor run --local",
+    "format": "prettier --write --config ../../.prettierrc.json \"src/**/*.ts\" \"test/**/*.ts\" \"*.{js,json}\"",
+    "integration-test:browser": "echo skipped",
+    "integration-test:node": "mocha -t 1200000 test-dist/index.js --reporter mocha-multi --reporter-options spec=-,mocha-junit-reporter=-",
+    "integration-test": "npm run integration-test:node && npm run integration-test:browser",
+    "lint:fix": "eslint -c ../../.eslintrc.json src test samples --ext .ts --fix",
+    "lint": "eslint -c ../../.eslintrc.json src test samples --ext .ts -f html -o event-hubs-lintReport.html || exit 0",
+    "pack": "npm pack 2>&1",
+    "prebuild": "npm run clean",
+    "test:browser": "npm run build:test && npm run unit-test:browser && npm run integration-test:browser",
+    "test:node": "npm run build:test && npm run unit-test:node && npm run integration-test:node",
+    "test": "npm run build:test && npm run unit-test && npm run integration-test",
+    "unit-test:browser": "echo skipped",
+    "unit-test:node": "echo skipped",
+    "unit-test": "npm run unit-test:node && npm run unit-test:browser"
+  },
+  "dependencies": {
+    "@azure/event-hubs": "5.0.0-preview.3",
+    "@azure/storage-blob": "12.0.0-preview.2",
+    "@azure/core-http": "1.0.0-preview.3",
+    "debug": "^4.1.1",
+    "events": "^3.0.0",
+    "tslib": "^1.9.3"
+  },
+  "devDependencies": {
+    "@microsoft/api-extractor": "^7.1.5",
+    "@types/mocha": "^5.2.5",
+    "@types/debug": "^4.1.4",
+    "@types/node": "^8.0.0",
+    "@types/dotenv": "^6.1.0",
+    "@types/chai": "^4.1.6",
+    "@types/chai-as-promised": "^7.1.0",
+    "@types/chai-string": "^1.4.1",
+    "@typescript-eslint/eslint-plugin": "^2.0.0",
+    "@typescript-eslint/parser": "^2.0.0",
+    "assert": "^1.4.1",
+    "chai": "^4.2.0",
+    "chai-as-promised": "^7.1.1",
+    "chai-string": "^1.5.0",
+    "cross-env": "^5.2.0",
+    "eslint": "^6.1.0",
+    "dotenv": "^8.0.0",
+    "eslint-config-prettier": "^6.0.0",
+    "eslint-plugin-no-null": "^1.0.2",
+    "eslint-plugin-no-only-tests": "^2.3.0",
+    "eslint-plugin-promise": "^4.1.1",
+    "inherits": "^2.0.3",
+    "karma": "^4.0.1",
+    "karma-chrome-launcher": "^3.0.0",
+    "karma-coverage": "^2.0.0",
+    "karma-edge-launcher": "^0.4.2",
+    "karma-env-preprocessor": "^0.1.1",
+    "karma-firefox-launcher": "^1.1.0",
+    "karma-ie-launcher": "^1.0.0",
+    "karma-junit-reporter": "^1.2.0",
+    "karma-mocha": "^1.3.0",
+    "karma-mocha-reporter": "^2.2.5",
+    "karma-remap-coverage": "^0.1.5",
+    "mocha": "^6.2.0",
+    "mocha-junit-reporter": "^1.18.0",
+    "mocha-multi": "^1.1.3",
+    "prettier": "^1.16.4",
+    "rimraf": "^3.0.0",
+    "rollup": "^1.16.3",
+    "rollup-plugin-commonjs": "^10.0.0",
+    "rollup-plugin-json": "^4.0.0",
+    "rollup-plugin-multi-entry": "^2.1.0",
+    "rollup-plugin-node-resolve": "^5.0.2",
+    "rollup-plugin-replace": "^2.1.0",
+    "rollup-plugin-sourcemaps": "^0.4.2",
+    "rollup-plugin-terser": "^5.1.1",
+    "rollup-plugin-visualizer": "^2.0.0",
+    "typescript": "^3.2.2",
+    "ts-node": "^8.3.0",
+    "util": "^0.12.1",
+    "guid-typescript": "1.0.9"
+  }
+}
diff --git a/sdk/eventhub/eventhubs-checkpoint-blob/review/eventhubs-checkpoint-blob.api.md b/sdk/eventhub/eventhubs-checkpoint-blob/review/eventhubs-checkpoint-blob.api.md
new file mode 100644
index 000000000000..258959c98846
--- /dev/null
+++ b/sdk/eventhub/eventhubs-checkpoint-blob/review/eventhubs-checkpoint-blob.api.md
@@ -0,0 +1,23 @@
+## API Report File for "@azure/eventhubs-checkpoint-blob"
+
+> Do not edit this file. It is a report generated by [API Extractor](https://api-extractor.com/).
+
+```ts
+
+import { Checkpoint } from '@azure/event-hubs';
+import { ContainerClient } from '@azure/storage-blob';
+import { PartitionManager } from '@azure/event-hubs';
+import { PartitionOwnership } from '@azure/event-hubs';
+
+// @public
+export class BlobPartitionManager implements PartitionManager {
+    constructor(containerClient: ContainerClient);
+    claimOwnership(partitionOwnership: PartitionOwnership[]): Promise<PartitionOwnership[]>;
+    listOwnership(eventHubName: string, consumerGroupName: string): Promise<PartitionOwnership[]>;
+    updateCheckpoint(checkpoint: Checkpoint): Promise<string>;
+}
+
+
+// (No @packageDocumentation comment for this package)
+
+```
diff --git a/sdk/eventhub/eventhubs-checkpoint-blob/review/storage-blob-partition-manager.api.md b/sdk/eventhub/eventhubs-checkpoint-blob/review/storage-blob-partition-manager.api.md
new file mode 100644
index 000000000000..f81c2a3dcdc5
--- /dev/null
+++ b/sdk/eventhub/eventhubs-checkpoint-blob/review/storage-blob-partition-manager.api.md
@@ -0,0 +1,23 @@
+## API Report File for "@azure/storage-blob-partition-manager"
+
+> Do not edit this file. It is a report generated by [API Extractor](https://api-extractor.com/).
+
+```ts
+
+import { Checkpoint } from '@azure/event-hubs';
+import { ContainerClient } from '@azure/storage-blob';
+import { PartitionManager } from '@azure/event-hubs';
+import { PartitionOwnership } from '@azure/event-hubs';
+
+// @public
+export class BlobPartitionManager implements PartitionManager {
+    constructor(containerClient: ContainerClient);
+    claimOwnership(partitionOwnership: PartitionOwnership[]): Promise<PartitionOwnership[]>;
+    listOwnership(eventHubName: string, consumerGroupName: string): Promise<PartitionOwnership[]>;
+    updateCheckpoint(checkpoint: Checkpoint): Promise<string>;
+}
+
+
+// (No @packageDocumentation comment for this package)
+
+```
diff --git a/sdk/eventhub/eventhubs-checkpoint-blob/rollup.base.config.js b/sdk/eventhub/eventhubs-checkpoint-blob/rollup.base.config.js
new file mode 100644
index 000000000000..98c031e9baa5
--- /dev/null
+++ b/sdk/eventhub/eventhubs-checkpoint-blob/rollup.base.config.js
@@ -0,0 +1,170 @@
+// Copyright (c) Microsoft Corporation. All rights reserved.
+// Licensed under the MIT License.
+
+import nodeResolve from "rollup-plugin-node-resolve";
+import multiEntry from "rollup-plugin-multi-entry";
+import cjs from "rollup-plugin-commonjs";
+import json from "rollup-plugin-json";
+import replace from "rollup-plugin-replace";
+import { terser } from "rollup-plugin-terser";
+import sourcemaps from "rollup-plugin-sourcemaps";
+import shim from "rollup-plugin-shim";
+import inject from "rollup-plugin-inject";
+
+import path from "path";
+
+const pkg = require("./package.json");
+const depNames = Object.keys(pkg.dependencies);
+const input = "dist-esm/src/index.js";
+const production = process.env.NODE_ENV === "production";
+
+export function nodeConfig(test = false) {
+  const externalNodeBuiltins = ["events", "util", "os"];
+  const baseConfig = {
+    input: input,
+    external: depNames.concat(externalNodeBuiltins),
+    output: { file: "dist/index.js", format: "cjs", sourcemap: true },
+    preserveSymlinks: false,
+    plugins: [
+      sourcemaps(),
+      replace({
+        delimiters: ["", ""],
+        values: {
+          // replace dynamic checks with if (true) since this is for node only.
+          // Allows rollup's dead code elimination to be more aggressive.
+          "if (isNode)": "if (true)"
+        }
+      }),
+      nodeResolve({ preferBuiltins: true }),
+      cjs(),
+      json()
+    ]
+  };
+
+  baseConfig.external.push("crypto");
+
+  if (test) {
+    // entry point is every test file
+    baseConfig.input = "dist-esm/test/**/*.spec.js";
+    baseConfig.plugins.unshift(multiEntry({ exports: false }));
+
+    // different output file
+    baseConfig.output.file = "test-dist/index.js";
+
+    // mark assert as external
+    baseConfig.external.push(
+      "assert",
+      "fs",
+      "path",
+      "os",
+      "tty",
+      "child_process",
+      "@azure/identity"
+    );
+
+    baseConfig.onwarn = (warning) => {
+      if (
+        warning.code === "CIRCULAR_DEPENDENCY" &&
+        warning.importer.indexOf(path.normalize("node_modules/chai/lib") === 0)
+      ) {
+        // Chai contains circular references, but they are not fatal and can be ignored.
+        return;
+      }
+
+      console.error(`(!) ${warning.message}`);
+    };
+
+    // Disable tree-shaking of test code.  In rollup-plugin-node-resolve@5.0.0, rollup started respecting
+    // the "sideEffects" field in package.json.  Since our package.json sets "sideEffects=false", this also
+    // applies to test code, which causes all tests to be removed by tree-shaking.
+    baseConfig.treeshake = false;
+  } else if (production) {
+    baseConfig.plugins.push(terser());
+  }
+
+  return baseConfig;
+}
+
+export function browserConfig(test = false) {
+  const baseConfig = {
+    input: input,
+    external: ["ms-rest-js"],
+    output: {
+      file: "browser/eventhubs-checkpoint-blob.js",
+      format: "umd",
+      name: "Azure.Messaging.EventHubs.checkpoint.blob",
+      sourcemap: true,
+      globals: { "ms-rest-js": "msRest" }
+    },
+    preserveSymlinks: false,
+    plugins: [
+      sourcemaps(),
+      replace(
+        // ms-rest-js is externalized so users must include it prior to using this bundle.
+        {
+          delimiters: ["", ""],
+          values: {
+            // replace dynamic checks with if (false) since this is for
+            // browser only. Rollup's dead code elimination will remove
+            // any code guarded by if (isNode) { ... }
+            "if (isNode)": "if (false)"
+          }
+        }
+      ),
+
+      // fs, net, and tls are used by rhea and need to be shimmed
+      // dotenv doesn't work in the browser, so replace it with a no-op function
+      shim({
+        fs: `export default {}`,
+        net: `export default {}`,
+        tls: `export default {}`,
+        dotenv: `export function config() { }`,
+        os: `
+          export function arch() { return "javascript" }
+          export function type() { return "Browser" }
+          export function release() { typeof navigator === 'undefined' ? '' : navigator.appVersion }
+        `,
+        path: `export default {}`,
+        dns: `export function resolve() { }`
+      }),
+
+      nodeResolve({
+        mainFields: ["module", "browser"],
+        preferBuiltins: false
+      }),
+
+      cjs({
+        namedExports: {
+          events: ["EventEmitter"]
+        }
+      }),
+
+      // rhea and rhea-promise use the Buffer global which requires
+      // injection to shim properly
+      inject({
+        modules: {
+          Buffer: ["buffer", "Buffer"],
+          process: "process"
+        },
+        exclude: ["./**/package.json"]
+      }),
+
+      json()
+    ]
+  };
+
+  if (test) {
+    baseConfig.input = "dist-esm/test/**/*.spec.js";
+    baseConfig.plugins.unshift(multiEntry({ exports: false }));
+    baseConfig.output.file = "test-browser/index.js";
+
+    // Disable tree-shaking of test code.  In rollup-plugin-node-resolve@5.0.0, rollup started respecting
+    // the "sideEffects" field in package.json.  Since our package.json sets "sideEffects=false", this also
+    // applies to test code, which causes all tests to be removed by tree-shaking.
+    baseConfig.treeshake = false;
+  } else if (production) {
+    baseConfig.plugins.push(terser());
+  }
+
+  return baseConfig;
+}
diff --git a/sdk/eventhub/eventhubs-checkpoint-blob/rollup.config.js b/sdk/eventhub/eventhubs-checkpoint-blob/rollup.config.js
new file mode 100644
index 000000000000..01f209a32fa8
--- /dev/null
+++ b/sdk/eventhub/eventhubs-checkpoint-blob/rollup.config.js
@@ -0,0 +1,16 @@
+// Copyright (c) Microsoft Corporation. All rights reserved.
+// Licensed under the MIT License.
+
+import * as base from "./rollup.base.config";
+
+const inputs = [];
+
+if (!process.env.ONLY_BROWSER) {
+  inputs.push(base.nodeConfig());
+}
+
+if (!process.env.ONLY_NODE) {
+  inputs.push(base.browserConfig());
+}
+
+export default inputs;
diff --git a/sdk/eventhub/eventhubs-checkpoint-blob/rollup.test.config.js b/sdk/eventhub/eventhubs-checkpoint-blob/rollup.test.config.js
new file mode 100644
index 000000000000..48ea762bf9e0
--- /dev/null
+++ b/sdk/eventhub/eventhubs-checkpoint-blob/rollup.test.config.js
@@ -0,0 +1,16 @@
+// Copyright (c) Microsoft Corporation. All rights reserved.
+// Licensed under the MIT License.
+
+import * as base from "./rollup.base.config";
+
+const inputs = [];
+
+if (!process.env.ONLY_BROWSER) {
+  inputs.push(base.nodeConfig({ test: true }));
+}
+
+if (!process.env.ONLY_NODE) {
+  inputs.push(base.browserConfig({ test: true }));
+}
+
+export default inputs;
diff --git a/sdk/eventhub/eventhubs-checkpoint-blob/samples/tsconfig.json b/sdk/eventhub/eventhubs-checkpoint-blob/samples/tsconfig.json
new file mode 100644
index 000000000000..0ec6e53d9008
--- /dev/null
+++ b/sdk/eventhub/eventhubs-checkpoint-blob/samples/tsconfig.json
@@ -0,0 +1,13 @@
+{
+  "extends": "../tsconfig.json",
+  "compilerOptions": {
+      "module": "commonjs"
+  },
+  "include": [
+      "**/*.ts"
+  ],
+  "exclude": [
+      "../node_modules",
+      "../typings/**",
+  ]
+}
diff --git a/sdk/eventhub/eventhubs-checkpoint-blob/src/blobPartitionManager.ts b/sdk/eventhub/eventhubs-checkpoint-blob/src/blobPartitionManager.ts
new file mode 100644
index 000000000000..f8c1ca83542a
--- /dev/null
+++ b/sdk/eventhub/eventhubs-checkpoint-blob/src/blobPartitionManager.ts
@@ -0,0 +1,212 @@
+// Copyright (c) Microsoft Corporation. All rights reserved.
+// Licensed under the MIT License.
+
+import { PartitionManager, PartitionOwnership, Checkpoint } from "@azure/event-hubs";
+import { ContainerClient } from "@azure/storage-blob";
+import * as log from "./log";
+
+/**
+ * A blob storage implementation of a `PartitionManager`
+ * @class
+ */
+export class BlobPartitionManager implements PartitionManager {
+  private _containerClient: ContainerClient;
+
+  constructor(containerClient: ContainerClient) {
+    this._containerClient = containerClient;
+  }
+  /**
+   * Get the list of all existing partition ownership from the underlying data store. Could return empty
+   * results if there are is no existing ownership information.
+   *
+   * @param eventHubName The event hub name.
+   * @param consumerGroupName The consumer group name.
+   * @return Partition ownership details of all the partitions that have/had an owner..
+   */
+  async listOwnership(
+    eventHubName: string,
+    consumerGroupName: string
+  ): Promise<PartitionOwnership[]> {
+    const partitionOwnershipArray: PartitionOwnership[] = [];
+    try {
+      for await (const blob of this._containerClient.listBlobsFlat({
+        include: ["metadata"],
+        prefix: `${eventHubName}/${consumerGroupName}/`
+      })) {
+        const blobPath = blob.name.split("/");
+        const blobName = blobPath[blobPath.length - 1];
+        const partitionOwnership: PartitionOwnership = {
+          eventHubName,
+          consumerGroupName,
+          ownerId: blob.metadata!.ownerid,
+          partitionId: blobName,
+          offset: blob.metadata ? parseInt(blob.metadata.offset) : -1,
+          sequenceNumber: blob.metadata ? parseInt(blob.metadata.sequencenumber) : -1,
+          lastModifiedTimeInMS:
+            blob.properties.lastModified && Date.parse(blob.properties.lastModified.toISOString()),
+          eTag: blob.properties.etag,
+          ownerLevel: 0 // this needs to be removed from eventhubs
+        };
+        partitionOwnershipArray.push(partitionOwnership);
+      }
+    } catch (err) {
+      log.error(`Error ocuured while fetching the list of the blobs.`, err);
+    }
+
+    return partitionOwnershipArray;
+  }
+
+  /**
+   * Claim ownership of a list of partitions. This will return the list of partitions that were owned
+   * successfully.
+   *
+   * @param partitionOwnership The list of partition ownership this instance is claiming to own.
+   * @return A list partitions this instance successfully claimed ownership.
+   */
+  async claimOwnership(partitionOwnership: PartitionOwnership[]): Promise<PartitionOwnership[]> {
+    let partitionOwnershipArray: PartitionOwnership[] = [];
+    for (const ownership of partitionOwnership) {
+      const blobName = `${ownership.eventHubName}/${ownership.consumerGroupName}/${ownership.partitionId}`;
+      let eTag;
+      try {
+        for await (const blob of this._containerClient.listBlobsFlat({
+          include: ["metadata"],
+          prefix: `${ownership.eventHubName}/${ownership.consumerGroupName}/`
+        })) {
+          if (blob.name === blobName) {
+            eTag = blob.properties.etag;
+            break;
+          }
+        }
+        let uploadBlobResponse;
+        const blobClient = this._containerClient.getBlobClient(blobName);
+        const blockBlobClient = blobClient.getBlockBlobClient();
+        if (eTag) {
+          uploadBlobResponse = await blockBlobClient.upload("", 0, {
+            metadata: {
+              OwnerId: ownership.ownerId,
+              SequenceNumber: ownership.sequenceNumber ? ownership.sequenceNumber.toString() : "",
+              Offset: ownership.offset ? ownership.offset.toString() : ""
+            },
+            accessConditions: {
+              modifiedAccessConditions: {
+                ifMatch: eTag
+              }
+            }
+          });
+        } else {
+          uploadBlobResponse = await blockBlobClient.upload("", 0, {
+            metadata: {
+              OwnerId: ownership.ownerId,
+              SequenceNumber: ownership.sequenceNumber ? ownership.sequenceNumber.toString() : "",
+              Offset: ownership.offset ? ownership.offset.toString() : ""
+            },
+            accessConditions: {
+              modifiedAccessConditions: {
+                ifNoneMatch: "*"
+              }
+            }
+          });
+        }
+        ownership.lastModifiedTimeInMS = Date.parse(uploadBlobResponse.lastModified!.toISOString());
+        ownership.eTag = uploadBlobResponse.eTag;
+        partitionOwnershipArray.push(ownership);
+        log.blobPartitionManager(
+          `Upload block blob ${blobName} successfully`,
+          `LastModifiedTime: ${uploadBlobResponse.lastModified!.toISOString()}, ETag: ${
+            uploadBlobResponse.eTag
+          }`
+        );
+      } catch (err) {
+        log.error(
+          `${[ownership.ownerId]} Error ocuured while claiming ownership for partition: ${
+            ownership.partitionId
+          }`,
+          err
+        );
+      }
+    }
+    return partitionOwnershipArray;
+  }
+
+  /**
+   * Updates the checkpoint in the data store for a partition.
+   *
+   * @param checkpoint The checkpoint.
+   * @return The new eTag on successful update
+   */
+  async updateCheckpoint(checkpoint: Checkpoint): Promise<string> {
+    const blobName = `${checkpoint.eventHubName}/${checkpoint.consumerGroupName}/${checkpoint.partitionId}`;
+    let ownerId;
+    let blob;
+    try {
+      for await (const blobItem of this._containerClient.listBlobsFlat({
+        include: ["metadata"],
+        prefix: `${checkpoint.eventHubName}/${checkpoint.consumerGroupName}/`
+      })) {
+        if (blobItem.name === blobName) {
+          ownerId = blobItem.metadata!.ownerid;
+          blob = blobItem;
+          break;
+        }
+      }
+    } catch (err) {
+      log.error(
+        `${[checkpoint.ownerId]} Error ocuured while downloading the blob for partition: ${
+          checkpoint.partitionId
+        }`,
+        err
+      );
+      return "";
+    }
+
+    if (!blob) {
+      log.error(
+        `Checkpoint for partitionId: ${checkpoint.partitionId} never claimed, hence cannot update the checkpoint.`
+      );
+      throw new Error(
+        `Checkpoint for partitionId: ${checkpoint.partitionId} never claimed, hence cannot update the checkpoint.`
+      );
+    }
+    if (ownerId !== checkpoint.ownerId) {
+      log.error(
+        `ownerId: [${checkpoint.ownerId}] doesn't match with stored ownerId: [${ownerId}], hence cannot update the checkpoint.`
+      );
+      throw new Error(
+        `OwnerId: [${checkpoint.ownerId}] doesn't match with stored ownerId: [${ownerId}], hence cannot update the checkpoint.`
+      );
+    }
+    try {
+      const blobClient = this._containerClient.getBlobClient(blobName);
+      const blockBlobClient = blobClient.getBlockBlobClient();
+      const uploadBlobResponse = await blockBlobClient.upload("", 0, {
+        metadata: {
+          OwnerId: checkpoint.ownerId,
+          SequenceNumber: checkpoint.sequenceNumber ? checkpoint.sequenceNumber.toString() : "",
+          Offset: checkpoint.offset ? checkpoint.offset.toString() : ""
+        },
+        accessConditions: {
+          modifiedAccessConditions: {
+            ifMatch: checkpoint.eTag
+          }
+        }
+      });
+
+      log.blobPartitionManager(
+        `Upload block blob ${blobName} successfully`,
+        `LastModifiedTime: ${uploadBlobResponse.lastModified!.toISOString()}, ETag: ${
+          uploadBlobResponse.eTag
+        }`
+      );
+      return uploadBlobResponse.eTag || "";
+    } catch (err) {
+      log.error(
+        `${[checkpoint.ownerId]} Error ocuured while uploading the blob for partition: ${
+          checkpoint.partitionId
+        }, hence cannot update the checkpoint`,
+        err
+      );
+      return "";
+    }
+  }
+}
diff --git a/sdk/eventhub/eventhubs-checkpoint-blob/src/index.ts b/sdk/eventhub/eventhubs-checkpoint-blob/src/index.ts
new file mode 100644
index 000000000000..e874171781d3
--- /dev/null
+++ b/sdk/eventhub/eventhubs-checkpoint-blob/src/index.ts
@@ -0,0 +1,5 @@
+// Copyright (c) Microsoft Corporation. All rights reserved.
+// Licensed under the MIT License.
+/// <reference lib="esnext.asynciterable" />
+
+export { BlobPartitionManager } from "./blobPartitionManager";
diff --git a/sdk/eventhub/eventhubs-checkpoint-blob/src/log.ts b/sdk/eventhub/eventhubs-checkpoint-blob/src/log.ts
new file mode 100644
index 000000000000..aeffea399659
--- /dev/null
+++ b/sdk/eventhub/eventhubs-checkpoint-blob/src/log.ts
@@ -0,0 +1,14 @@
+// Copyright (c) Microsoft Corporation. All rights reserved.
+// Licensed under the MIT License.
+
+import debugModule from "debug";
+/**
+ * @ignore
+ * log statements for error
+ */
+export const error = debugModule("azure:event-hubs:error");
+/**
+ * @ignore
+ * log statements for blobPartitionManager
+ */
+export const blobPartitionManager = debugModule("azure:storage-blob-partition-manager:blobPartitionManager");
diff --git a/sdk/eventhub/eventhubs-checkpoint-blob/test/blob-partition-manager.spec.ts b/sdk/eventhub/eventhubs-checkpoint-blob/test/blob-partition-manager.spec.ts
new file mode 100644
index 000000000000..177e7cc5be6d
--- /dev/null
+++ b/sdk/eventhub/eventhubs-checkpoint-blob/test/blob-partition-manager.spec.ts
@@ -0,0 +1,267 @@
+// Copyright (c) Microsoft Corporation. All rights reserved.
+// Licensed under the MIT License.
+
+import chai from "chai";
+const should = chai.should();
+import chaiAsPromised from "chai-as-promised";
+chai.use(chaiAsPromised);
+import chaiString from "chai-string";
+chai.use(chaiString);
+import debugModule from "debug";
+const debug = debugModule("azure:event-hubs:partitionPump");
+import { EnvVarKeys, getEnvVars } from "./utils/testUtils";
+import { BlobPartitionManager } from "../src";
+import { ContainerClient } from "@azure/storage-blob";
+import { PartitionOwnership, Checkpoint } from "@azure/event-hubs";
+import { Guid } from "guid-typescript";
+const env = getEnvVars();
+
+describe("Blob Partition Manager", function(): void {
+  const service = {
+    storageConnectionString: env[EnvVarKeys.STORAGE_CONNECTION_STRING]
+  };
+  let containerClient: ContainerClient;
+  before("validate environment", async function(): Promise<void> {
+    should.exist(
+      env[EnvVarKeys.STORAGE_CONNECTION_STRING],
+      "define STORAGE_CONNECTION_STRING in your environment before running integration tests."
+    );
+  });
+
+ 
+  beforeEach(async () => {
+    containerClient = new ContainerClient(service.storageConnectionString, `container-${Guid.create()}`);
+    await containerClient.create();
+  });
+
+  afterEach(async() => {
+    await containerClient.delete();
+  });
+
+  it("listOwnership should return an empty array", async function(): Promise<void> {
+    const partitionManager = new BlobPartitionManager(containerClient);
+    const listOwnership = await partitionManager.listOwnership("testEventHub", "testConsumerGroup");
+    should.equal(listOwnership.length, 0);
+  });
+
+  it("claimOwnership call should succeed, if it has been called for the first time", async function(): Promise<
+    void
+  > {
+    const partitionManager = new BlobPartitionManager(containerClient);
+    const listOwnership = await partitionManager.listOwnership("testEventHub", "testConsumerGroup");
+    should.equal(listOwnership.length, 0);
+
+    const partitionOwnership: PartitionOwnership = {
+      ownerId: "Id1",
+      partitionId: "0",
+      consumerGroupName: "testConsumerGroup",
+      eventHubName: "testEventHub",
+      ownerLevel: 0
+    };
+
+    const partitionOwnershipArray = await partitionManager.claimOwnership([partitionOwnership]);
+    should.equal(partitionOwnershipArray.length, 1);
+    const ownershipList = await partitionManager.listOwnership("testEventHub", "testConsumerGroup");
+    ownershipList.length.should.equal(1);
+    ownershipList[0].ownerId.should.equal("Id1");
+    ownershipList[0].partitionId.should.equal("0");
+    ownershipList[0].consumerGroupName.should.equal("testConsumerGroup");
+    ownershipList[0].eventHubName.should.equal("testEventHub");
+    ownershipList[0].lastModifiedTimeInMS!.should.not.undefined;
+    ownershipList[0].eTag!.should.not.undefined;
+    debug(
+      `LastModifiedTime: ${ownershipList[0].lastModifiedTimeInMS!}, ETag: ${ownershipList[0].eTag}`
+    );
+  });
+
+  it("After multiple claimOwnership calls for a single partition, listOwnership should return an array with a single PartitionOwnership for that partition.", async function(): Promise<
+    void
+  > {
+    const partitionManager = new BlobPartitionManager(containerClient);
+    const listOwnership = await partitionManager.listOwnership("testEventHub", "testConsumerGroup");
+    should.equal(listOwnership.length, 0);
+
+    const partitionOwnership: PartitionOwnership = {
+      ownerId: "Id1",
+      partitionId: "0",
+      consumerGroupName: "testConsumerGroup",
+      eventHubName: "testEventHub",
+      ownerLevel: 0
+    };
+
+    await partitionManager.claimOwnership([partitionOwnership]);
+    await partitionManager.claimOwnership([partitionOwnership]);
+    await partitionManager.claimOwnership([partitionOwnership]);
+
+    const ownershipList = await partitionManager.listOwnership("testEventHub", "testConsumerGroup");
+    ownershipList.length.should.equal(1);
+    ownershipList[0].ownerId.should.equal("Id1");
+    ownershipList[0].partitionId.should.equal("0");
+    ownershipList[0].consumerGroupName.should.equal("testConsumerGroup");
+    ownershipList[0].eventHubName.should.equal("testEventHub");
+    ownershipList[0].lastModifiedTimeInMS!.should.not.undefined;
+    ownershipList[0].eTag!.should.not.undefined;
+    debug(
+      `LastModifiedTime: ${ownershipList[0].lastModifiedTimeInMS!}, ETag: ${ownershipList[0].eTag}`
+    );
+  });
+
+  it("After multiple claimOwnership calls for multiple partition, listOwnership should return an array with a single PartitionOwnership for each partition.", async function(): Promise<
+    void
+  > {
+    const partitionManager = new BlobPartitionManager(containerClient);
+    const listOwnership = await partitionManager.listOwnership("testEventHub", "testConsumerGroup");
+    should.equal(listOwnership.length, 0);
+
+    const partitionOwnershipArray: PartitionOwnership[] = [];
+
+    for (let index = 0; index < 3; index++) {
+      const partitionOwnership: PartitionOwnership = {
+        ownerId: "Id1",
+        partitionId: `${index}`,
+        consumerGroupName: "testConsumerGroup",
+        eventHubName: "testEventHub",
+        ownerLevel: 0
+      };
+      partitionOwnershipArray.push(partitionOwnership);
+    }
+
+    await partitionManager.claimOwnership([partitionOwnershipArray[0]]);
+    await partitionManager.claimOwnership([partitionOwnershipArray[1]]);
+    await partitionManager.claimOwnership([partitionOwnershipArray[2]]);
+
+    const ownershipList = await partitionManager.listOwnership("testEventHub", "testConsumerGroup");
+    ownershipList.length.should.equal(3);
+
+    ownershipList[0].partitionId.should.equal("0");
+    ownershipList[0].ownerId.should.equal("Id1");
+    ownershipList[0].consumerGroupName.should.equal("testConsumerGroup");
+    ownershipList[0].eventHubName.should.equal("testEventHub");
+    ownershipList[0].lastModifiedTimeInMS!.should.not.undefined;
+    ownershipList[0].eTag!.should.not.undefined;
+
+    ownershipList[1].partitionId.should.equal("1");
+    ownershipList[1].lastModifiedTimeInMS!.should.not.undefined;
+    ownershipList[1].eTag!.should.not.undefined;
+
+    ownershipList[2].partitionId.should.equal("2");
+    ownershipList[2].lastModifiedTimeInMS!.should.not.undefined;
+    ownershipList[2].eTag!.should.not.undefined;
+  });
+
+  it("updateCheckpoint on a partition with the correct ownerId should update the checkpoint.", async function(): Promise<
+    void
+  > {
+    const partitionManager = new BlobPartitionManager(containerClient);
+    const listOwnership = await partitionManager.listOwnership("testEventHub", "testConsumerGroup");
+    should.equal(listOwnership.length, 0);
+
+    const partitionOwnership: PartitionOwnership = {
+      ownerId: "Id1",
+      partitionId: "0",
+      consumerGroupName: "testConsumerGroup",
+      eventHubName: "testEventHub",
+      ownerLevel: 0
+    };
+
+    const partitionOwnershipArray = await partitionManager.claimOwnership([partitionOwnership]);
+    should.equal(partitionOwnershipArray.length, 1);
+    const ownershipList = await partitionManager.listOwnership("testEventHub", "testConsumerGroup");
+    ownershipList.length.should.equal(1);
+    ownershipList[0].ownerId.should.equal("Id1");
+    ownershipList[0].partitionId.should.equal("0");
+    ownershipList[0].consumerGroupName.should.equal("testConsumerGroup");
+    ownershipList[0].eventHubName.should.equal("testEventHub");
+    ownershipList[0].lastModifiedTimeInMS!.should.not.undefined;
+    ownershipList[0].eTag!.should.not.undefined;
+
+    const checkpoint: Checkpoint = {
+      eventHubName: "testEventHub",
+      consumerGroupName: "testConsumerGroup",
+      ownerId: "Id1",
+      partitionId: "0",
+      sequenceNumber: 100,
+      offset: 1023,
+      eTag: ownershipList[0].eTag!
+    };
+
+    await partitionManager.updateCheckpoint(checkpoint);
+    const ownershipArray = await partitionManager.listOwnership(
+      "testEventHub",
+      "testConsumerGroup"
+    );
+    ownershipArray.length.should.equal(1);
+    ownershipArray[0].ownerId.should.equal("Id1");
+    ownershipArray[0].partitionId.should.equal("0");
+    ownershipArray[0].consumerGroupName.should.equal("testConsumerGroup");
+    ownershipArray[0].eventHubName.should.equal("testEventHub");
+    ownershipArray[0].sequenceNumber!.should.equal(100);
+    ownershipArray[0].offset!.should.equal(1023);
+    ownershipArray[0].eTag!.should.not.undefined;
+    ownershipArray[0].eTag!.should.not.equal(ownershipList[0].eTag!);
+    ownershipArray[0].lastModifiedTimeInMS!.should.not.undefined;
+  });
+
+  it("updateCheckpoint on a partition with the incorrect ownerId should throw an error.", async function(): Promise<
+    void
+  > {
+    const partitionManager = new BlobPartitionManager(containerClient);
+    const listOwnership = await partitionManager.listOwnership("testEventHub", "testConsumerGroup");
+    should.equal(listOwnership.length, 0);
+
+    const partitionOwnership: PartitionOwnership = {
+      ownerId: "Id1",
+      partitionId: "0",
+      consumerGroupName: "testConsumerGroup",
+      eventHubName: "testEventHub",
+      ownerLevel: 0
+    };
+
+    const partitionOwnershipArray = await partitionManager.claimOwnership([partitionOwnership]);
+    should.equal(partitionOwnershipArray.length, 1);
+    const ownershipList = await partitionManager.listOwnership("testEventHub", "testConsumerGroup");
+    ownershipList.length.should.equal(1);
+
+    const checkpoint: Checkpoint = {
+      eventHubName: "testEventHub",
+      consumerGroupName: "testConsumerGroup",
+      ownerId: "Id2",
+      partitionId: "0",
+      sequenceNumber: 100,
+      offset: 1023,
+      eTag: ownershipList[0].eTag!
+    };
+
+    await partitionManager.updateCheckpoint(checkpoint).catch((err) => {
+      debug("Error occured while updating checkpoint", err);
+      should.exist(err);
+      err.message.should.equal(`OwnerId: [${checkpoint.ownerId}] doesn't match with stored ownerId: [${ownershipList[0].ownerId}], hence cannot update the checkpoint.`
+      );
+    });
+  });
+
+  it("updateCheckpoint on a partition that has not been claimed should throw an error.", async function(): Promise<
+  void
+> {
+  const partitionManager = new BlobPartitionManager(containerClient);
+  const listOwnership = await partitionManager.listOwnership("testEventHub", "testConsumerGroup");
+  should.equal(listOwnership.length, 0);
+
+  const checkpoint: Checkpoint = {
+    eventHubName: "testEventHub",
+    consumerGroupName: "testConsumerGroup",
+    ownerId: "Id2",
+    partitionId: "0",
+    sequenceNumber: 100,
+    offset: 1023,
+    eTag: "etag-123"
+  };
+
+  await partitionManager.updateCheckpoint(checkpoint).catch((err) => {
+    debug("Error occured while updating checkpoint", err);
+    should.exist(err);
+    err.message.should.equal(`Checkpoint for partitionId: ${checkpoint.partitionId} never claimed, hence cannot update the checkpoint.`
+    );
+  });
+});
+}).timeout(90000);
diff --git a/sdk/eventhub/eventhubs-checkpoint-blob/test/utils/testUtils.ts b/sdk/eventhub/eventhubs-checkpoint-blob/test/utils/testUtils.ts
new file mode 100644
index 000000000000..ca734df912e5
--- /dev/null
+++ b/sdk/eventhub/eventhubs-checkpoint-blob/test/utils/testUtils.ts
@@ -0,0 +1,27 @@
+// Copyright (c) Microsoft Corporation. All rights reserved.
+// Licensed under the MIT License.
+
+import * as dotenv from "dotenv";
+dotenv.config();
+
+export const isNode =
+  !!process && !!process.version && !!process.versions && !!process.versions.node;
+
+export enum EnvVarKeys {
+  STORAGE_CONNECTION_STRING = "STORAGE_CONNECTION_STRING"
+}
+
+function getEnvVarValue(name: string): string | undefined {
+  if (isNode) {
+    return process.env[name];
+  } else {
+    // @ts-ignore
+    return window.__env__[name];
+  }
+}
+
+export function getEnvVars(): { [key in EnvVarKeys]: any } {
+  return {
+    [EnvVarKeys.STORAGE_CONNECTION_STRING]: getEnvVarValue(EnvVarKeys.STORAGE_CONNECTION_STRING)
+  };
+}
diff --git a/sdk/eventhub/eventhubs-checkpoint-blob/tsconfig.json b/sdk/eventhub/eventhubs-checkpoint-blob/tsconfig.json
new file mode 100644
index 000000000000..008f6441a69d
--- /dev/null
+++ b/sdk/eventhub/eventhubs-checkpoint-blob/tsconfig.json
@@ -0,0 +1,39 @@
+{
+  "compilerOptions": {
+    /* Basic Options */
+    "target": "es6" /* Specify ECMAScript target version: 'ES3' (default), 'ES5', 'ES2015', 'ES2016', 'ES2017','ES2018' or 'ESNEXT'. */,
+    "module": "es6" /* Specify module code generation: 'none', 'commonjs', 'amd', 'system', 'umd', 'es2015', or 'ESNext'. */,
+
+    "declaration": true /* Generates corresponding '.d.ts' file. */,
+    "declarationMap": true /* Generates a sourcemap for each corresponding '.d.ts' file. */,
+    "sourceMap": true /* Generates corresponding '.map' file. */,
+
+    "outDir": "./dist-esm" /* Redirect output structure to the directory. */,
+    "declarationDir": "./typings" /* Output directory for generated declaration files.*/,
+
+    "importHelpers": true /* Import emit helpers from 'tslib'. */,
+
+    /* Strict Type-Checking Options */
+    "strict": true /* Enable all strict type-checking options. */,
+    "noImplicitReturns": true /* Report error when not all code paths in function return a value. */,
+
+    /* Additional Checks */
+    "noUnusedLocals": true /* Report errors on unused locals. */,
+
+    /* Module Resolution Options */
+    "moduleResolution": "node" /* Specify module resolution strategy: 'node' (Node.js) or 'classic' (TypeScript pre-1.6). */,
+    "allowSyntheticDefaultImports": true /* Allow default imports from modules with no default export. This does not affect code emit, just typechecking. */,
+    "esModuleInterop": true /* Enables emit interoperability between CommonJS and ES Modules via creation of namespace objects for all imports. Implies 'allowSyntheticDefaultImports'. */,
+
+    /* Experimental Options */
+    "forceConsistentCasingInFileNames": true,
+
+    /* Other options */
+    "newLine": "LF" /*	Use the specified end of line sequence to be used when emitting files: "crlf" (windows) or "lf" (unix).”*/,
+    "allowJs": false /* Don't allow JavaScript files to be compiled.*/,
+    "resolveJsonModule": true
+  },
+  "compileOnSave": true,
+  "exclude": ["node_modules", "typings/**", "./samples/**/*.ts"],
+  "include": ["./src/**/*.ts", "./test/**/*.ts"]
+}
diff --git a/sdk/eventhub/storage-blob-partition-manager/src/blobPartitionManager.ts b/sdk/eventhub/storage-blob-partition-manager/src/blobPartitionManager.ts
new file mode 100644
index 000000000000..9caa5bcc1734
--- /dev/null
+++ b/sdk/eventhub/storage-blob-partition-manager/src/blobPartitionManager.ts
@@ -0,0 +1,217 @@
+// Copyright (c) Microsoft Corporation. All rights reserved.
+// Licensed under the MIT License.
+
+import { PartitionManager, PartitionOwnership, Checkpoint } from "@azure/event-hubs";
+import { ContainerClient, Models } from "@azure/storage-blob";
+import * as log from "./log";
+
+/**
+ * A blob storage implementation of a `PartitionManager`
+ * @class
+ */
+export class BlobPartitionManager implements PartitionManager {
+  private _containerClient: ContainerClient;
+
+  constructor(containerClient: ContainerClient) {
+    this._containerClient = containerClient;
+  }
+  /**
+   * Get the list of all existing partition ownership from the underlying data store. Could return empty
+   * results if there are is no existing ownership information.
+   *
+   * @param eventHubName The event hub name.
+   * @param consumerGroupName The consumer group name.
+   * @return Partition ownership details of all the partitions that have/had an owner..
+   */
+  async listOwnership(
+    eventHubName: string,
+    consumerGroupName: string
+  ): Promise<PartitionOwnership[]> {
+    const partitionOwnershipArray: PartitionOwnership[] = [];
+
+    for await (const blob of this._containerClient.listBlobsFlat()) {
+      const blobPath = blob.name.split("/");
+      const blobName = blobPath[blobPath.length - 1];
+      const blobClient = this._containerClient.getBlobClient(blob.name);
+      try {
+        const downloadBlockBlobResponse: Models.BlobDownloadResponse = await blobClient.download();
+        const partitionOwnership: PartitionOwnership = {
+          eventHubName,
+          consumerGroupName,
+          ownerId: downloadBlockBlobResponse.metadata!.ownerid,
+          partitionId: blobName,
+          offset: downloadBlockBlobResponse.metadata
+            ? parseInt(downloadBlockBlobResponse.metadata.offset)
+            : -1,
+          sequenceNumber: downloadBlockBlobResponse.metadata
+            ? parseInt(downloadBlockBlobResponse.metadata.sequencenumber)
+            : -1,
+          lastModifiedTimeInMS:
+            downloadBlockBlobResponse.lastModified &&
+            Date.parse(downloadBlockBlobResponse.lastModified.toISOString()),
+          eTag: downloadBlockBlobResponse.eTag,
+          ownerLevel: 0 // this needs to be removed from eventhubs
+        };
+        partitionOwnershipArray.push(partitionOwnership);
+      } catch (err) {
+        log.error(
+          `Error ocuured while downloading the blob: ${blob.name} for partitionId: ${blobName}.`,
+          err
+        );
+      }
+    }
+
+    return partitionOwnershipArray;
+  }
+
+  /**
+   * Claim ownership of a list of partitions. This will return the list of partitions that were owned
+   * successfully.
+   *
+   * @param partitionOwnership The list of partition ownership this instance is claiming to own.
+   * @return A list partitions this instance successfully claimed ownership.
+   */
+  async claimOwnership(partitionOwnership: PartitionOwnership[]): Promise<PartitionOwnership[]> {
+    let partitionOwnershipArray: PartitionOwnership[] = [];
+    for (const ownership of partitionOwnership) {
+      const blobName = `${ownership.eventHubName}/${ownership.consumerGroupName}/${ownership.partitionId}`;
+      const blobClient = this._containerClient.getBlobClient(blobName);
+      const blockBlobClient = blobClient.getBlockBlobClient();
+      let eTag;
+      try {
+        for await (const blob of this._containerClient.listBlobsFlat()) {
+          if (blob.name === blobName) {
+            const downloadBlockBlobResponse: Models.BlobDownloadResponse = await blobClient.download();
+            eTag = downloadBlockBlobResponse.eTag;
+            break;
+          }
+        }
+        let uploadBlobResponse;
+        if (eTag) {
+          uploadBlobResponse = await blockBlobClient.upload("", 0, {
+            metadata: {
+              OwnerId: ownership.ownerId,
+              SequenceNumber: ownership.sequenceNumber ? ownership.sequenceNumber.toString() : "",
+              Offset: ownership.offset ? ownership.offset.toString() : ""
+            },
+            accessConditions: {
+              modifiedAccessConditions: {
+                ifMatch: eTag
+              }
+            }
+          });
+        } else {
+          uploadBlobResponse = await blockBlobClient.upload("", 0, {
+            metadata: {
+              OwnerId: ownership.ownerId,
+              SequenceNumber: ownership.sequenceNumber ? ownership.sequenceNumber.toString() : "",
+              Offset: ownership.offset ? ownership.offset.toString() : ""
+            },
+            accessConditions: {
+              modifiedAccessConditions: {
+                ifNoneMatch: "*"
+              }
+            }
+          });
+        }
+        ownership.lastModifiedTimeInMS = Date.parse(uploadBlobResponse.lastModified!.toISOString());
+        ownership.eTag = uploadBlobResponse.eTag;
+        partitionOwnershipArray.push(ownership);
+        log.blobPartitionManager(
+          `Upload block blob ${blobName} successfully`,
+          `LastModifiedTime: ${uploadBlobResponse.lastModified!.toISOString()}, ETag: ${
+            uploadBlobResponse.eTag
+          }`
+        );
+      } catch (err) {
+        log.error(
+          `${[ownership.ownerId]} Error ocuured while claiming ownership for partition: ${
+            ownership.partitionId
+          }`,
+          err
+        );
+      }
+    }
+    return partitionOwnershipArray;
+  }
+
+  /**
+   * Updates the checkpoint in the data store for a partition.
+   *
+   * @param checkpoint The checkpoint.
+   * @return The new eTag on successful update
+   */
+  async updateCheckpoint(checkpoint: Checkpoint): Promise<string> {
+    const blobName = `${checkpoint.eventHubName}/${checkpoint.consumerGroupName}/${checkpoint.partitionId}`;
+    let uploadBlobResponse;
+    const blobClient = this._containerClient.getBlobClient(blobName);
+    const blockBlobClient = blobClient.getBlockBlobClient();
+
+    let ownerId;
+    let blob;
+    try {
+      for await (const blobItem of this._containerClient.listBlobsFlat()) {
+        if (blobItem.name === blobName) {
+          const downloadBlockBlobResponse: Models.BlobDownloadResponse = await blobClient.download();
+          ownerId = downloadBlockBlobResponse.metadata!.ownerid;
+          blob = blobItem;
+          break;
+        }
+      }
+    } catch (err) {
+      log.error(
+        `${[checkpoint.ownerId]} Error ocuured while downloading the blob for partition: ${
+          checkpoint.partitionId
+        }, hence cannot update the checkpoint`,
+        err
+      );
+      return "";
+    }
+    if (!blob) {
+      log.error(
+        `Checkpoint for partitionId: ${checkpoint.partitionId} never claimed, hence cannot update the checkpoint.`
+      );
+      throw new Error(
+        `Checkpoint for partitionId: ${checkpoint.partitionId} never claimed, hence cannot update the checkpoint.`
+      );
+    }
+    if (ownerId !== checkpoint.ownerId) {
+      log.error(
+        `ownerId: [${checkpoint.ownerId}] doesn't match with stored ownerId: [${ownerId}], hence cannot update the checkpoint.`
+      );
+      throw new Error(
+        `OwnerId: [${checkpoint.ownerId}] doesn't match with stored ownerId: [${ownerId}], hence cannot update the checkpoint.`
+      );
+    }
+    try {
+      uploadBlobResponse = await blockBlobClient.upload("", 0, {
+        metadata: {
+          OwnerId: checkpoint.ownerId,
+          SequenceNumber: checkpoint.sequenceNumber ? checkpoint.sequenceNumber.toString() : "",
+          Offset: checkpoint.offset ? checkpoint.offset.toString() : ""
+        },
+        accessConditions: {
+          modifiedAccessConditions: {
+            ifMatch: checkpoint.eTag
+          }
+        }
+      });
+
+      log.blobPartitionManager(
+        `Upload block blob ${blobName} successfully`,
+        `LastModifiedTime: ${uploadBlobResponse.lastModified!.toISOString()}, ETag: ${
+          uploadBlobResponse.eTag
+        }`
+      );
+    } catch (err) {
+      log.error(
+        `${[checkpoint.ownerId]} Error ocuured while uploading the blob for partition: ${
+          checkpoint.partitionId
+        }, hence cannot update the checkpoint`,
+        err
+      );
+      return "";
+    }
+    return uploadBlobResponse.eTag || "";
+  }
+}