diff --git a/specification/consumption/resource-manager/Microsoft.Consumption/stable/2018-03-31/consumption.json b/specification/consumption/resource-manager/Microsoft.Consumption/stable/2018-03-31/consumption.json
index 077dbd24d7be..b4e43114095f 100644
--- a/specification/consumption/resource-manager/Microsoft.Consumption/stable/2018-03-31/consumption.json
+++ b/specification/consumption/resource-manager/Microsoft.Consumption/stable/2018-03-31/consumption.json
@@ -47,6 +47,12 @@
         "x-ms-examples": {
           "UsageDetailsList": {
             "$ref": "./examples/UsageDetailsList.json"
+          },
+          "UsageDetailsListFilterByTag": {
+            "$ref": "./examples/UsageDetailsListFilterByTag.json"
+          },
+          "UsageDetailsListGroupByTagDate": {
+            "$ref": "./examples/UsageDetailsListGroupByTagDate.json"
           }
         },
         "parameters": [
@@ -62,7 +68,7 @@
           },
           {
             "name": "$filter",
-            "description": "May be used to filter usageDetails by properties/usageEnd (Utc time), properties/usageStart (Utc time), properties/resourceGroup, properties/instanceName or properties/instanceId. The filter supports 'eq', 'lt', 'gt', 'le', 'ge', and 'and'. It does not currently support 'ne', 'or', or 'not'.",
+            "description": "May be used to filter usageDetails by properties/usageEnd (Utc time), properties/usageStart (Utc time), properties/resourceGroup, properties/instanceName, properties/instanceId or tags. The filter supports 'eq', 'lt', 'gt', 'le', 'ge', and 'and'. It does not currently support 'ne', 'or', or 'not'. Tag filter is a key value pair string where key and value is separated by a colon (:).",
             "in": "query",
             "required": false,
             "type": "string"
@@ -83,6 +89,18 @@
             "minimum": 1,
             "maximum": 1000
           },
+          {
+            "name": "$apply",
+            "description": "OData apply expression to aggregatie usageDetails by tags or (tags and properties/usageStart)",
+            "in": "query",
+            "required": false,
+            "type": "string",            
+            "x-ms-parameter-location": "method",
+            "x-ms-parameter-grouping": {
+              "name": "QueryOptions"
+            },
+            "x-ms-client-name": "Apply"
+          },
           {
             "$ref": "#/parameters/apiVersionParameter"
           }
@@ -122,6 +140,9 @@
           },
           "UsageDetailsExpand": {
             "$ref": "./examples/UsageDetailsExpand.json"
+          },
+          "UsageDetailsListForBillingPeriodGroupByTag": {
+            "$ref": "./examples/UsageDetailsListForBillingPeriodGroupByTag.json"
           }
         },
         "parameters": [
@@ -140,11 +161,23 @@
           },
           {
             "name": "$filter",
-            "description": "May be used to filter usageDetails by properties/usageEnd (Utc time), properties/usageStart (Utc time), properties/resourceGroup, properties/instanceName or properties/instanceId. The filter supports 'eq', 'lt', 'gt', 'le', 'ge', and 'and'. It does not currently support 'ne', 'or', or 'not'.",
+            "description": "May be used to filter usageDetails by properties/usageEnd (Utc time), properties/usageStart (Utc time), properties/resourceGroup, properties/instanceName or properties/instanceId. The filter supports 'eq', 'lt', 'gt', 'le', 'ge', and 'and'. It does not currently support 'ne', 'or', or 'not'. Tag filter is a key value pair string where key and value is separated by a colon (:).",
             "in": "query",
             "required": false,
             "type": "string"
           },
+          {
+            "name": "$apply",
+            "description": "OData apply expression to aggregatie usageDetails by tags or (tags and properties/usageStart) for specified billing period",
+            "in": "query",
+            "required": false,
+            "type": "string",            
+            "x-ms-parameter-location": "method",
+            "x-ms-parameter-grouping": {
+              "name": "QueryOptions"
+            },
+            "x-ms-client-name": "Apply"
+          },
           {
             "name": "$skiptoken",
             "description": "Skiptoken is only used if a previous operation returned a partial result. If a previous response contains a nextLink element, the value of the nextLink element will include a skiptoken parameter that specifies a starting point to use for subsequent calls.",
@@ -533,6 +566,58 @@
         }
       }
     },
+    "/subscriptions/{subscriptionId}/providers/Microsoft.Consumption/reservationRecommendations": {
+      "get": {
+        "tags": [
+          "ReservationRecommendations"
+        ],
+        "operationId": "ReservationRecommendations_List",
+        "description": "List of recomendations for purchasing reserved instances.",
+        "externalDocs": {
+          "url": "https://docs.microsoft.com/en-us/rest/api/consumption/"
+        },
+        "x-ms-examples": {
+          "ReservationRecommendations": {
+            "$ref": "./examples/ReservationRecommendationsList.json"
+          },
+          "ReservationRecommendationsFilterByScopeLookBackPeriod": {
+            "$ref": "./examples/ReservationRecommendationsFilterByScopeLookBackPeriod.json"
+          }
+        },
+        "parameters": [          
+          {
+            "name": "$filter",
+            "description": "May be used to filter reservationRecommendations by properties/scope and properties/lookBackPeriod.",
+            "in": "query",
+            "required": false,
+            "type": "string"
+          },
+          {
+            "$ref": "#/parameters/apiVersionParameter"
+          },
+          {
+            "$ref": "#/parameters/subscriptionIdParameter"
+          }
+        ],
+        "responses": {
+          "200": {
+            "description": "OK. The request has succeeded.",
+            "schema": {
+              "$ref": "#/definitions/ReservationRecommendationsListResult"
+            }
+          },
+          "default": {
+            "description": "Error response describing why the operation failed.",
+            "schema": {
+              "$ref": "#/definitions/ErrorResponse"
+            }
+          }
+        },
+        "x-ms-pageable": {
+          "nextLinkName": "nextLink"
+        }
+      }
+    },
     "/subscriptions/{subscriptionId}/providers/Microsoft.Consumption/budgets": {
       "get": {
         "tags": [
@@ -1550,6 +1635,99 @@
         }
       }
     },
+    "ReservationRecommendationsProperties": {
+      "description": "The properties of the reservation recommendations.",
+      "properties": {
+        "lookBackPeriod": {
+          "description": "The number of days of usage to look back for recommendations.",
+          "type": "string",
+          "readOnly": true
+        },
+        "meterId": {
+          "description": "The meter id (GUID)",
+          "type": "string",
+          "format":"uuid",
+          "readOnly": true
+        },
+        "term": {
+          "description": "RI recommendations in one or three year terms.",
+          "type": "string",
+          "readOnly": true
+        },
+        "costWithNoReservedInstances": {
+          "description": "The total amount of cost without reserved instances.",
+          "type": "number",
+          "format": "decimal",
+          "readOnly": true
+        },
+        "recommendedQuantity": {
+          "description": "Recomended quality for reserved instances.",
+          "type": "number",
+          "format": "decimal",
+          "readOnly": true
+        },
+        "totalCostWithReservedInstances": {
+          "description": "The total amount of cost with reserved instances.",
+          "type": "number",
+          "format": "decimal",
+          "readOnly": true
+        },
+        "netSavings": {
+          "description": "Total estimated savings with reserved instances.",
+          "type": "number",
+          "format": "decimal",
+          "readOnly": true
+        },        
+        "firstUsageDate": {
+          "description": "The usage date for looking back.",
+          "type": "string",
+          "format": "date-time",
+          "readOnly": true
+        },        
+        "scope": {
+          "description": "Shared or single recommendation.",
+          "type": "string",
+          "readOnly": true
+        }
+      }
+    },
+    "ReservationRecommendations": {
+      "description": "Reservation recommendations resource.",
+      "type": "object",
+      "allOf": [
+        {
+          "$ref": "#/definitions/Resource"
+        },
+        {
+          "$ref": "#/definitions/ResourceAttributes"
+        }
+      ],
+      "properties": {
+        "properties": {
+          "x-ms-client-flatten": true,
+          "$ref": "#/definitions/ReservationRecommendationsProperties",
+          "title": "Reservation Recommendations properties"
+        }
+      }
+    },
+    "ReservationRecommendationsListResult": {
+      "description": "Result of listing reservation recommendations.",
+      "properties": {
+        "value": {
+          "description": "The list of reservation recommendations.",
+          "type": "array",
+          "readOnly": true,
+          "items": {
+            "$ref": "#/definitions/ReservationRecommendations"
+          }
+        },
+        "nextLink": {
+          "description": "The link (url) to the next page of results.",
+          "type": "string",
+          "readOnly": true
+        }
+      }
+    },
     "ReservationDetailsProperties": {
       "description": "The properties of the reservation details.",
       "properties": {
@@ -1937,6 +2115,21 @@
       },
       "x-ms-azure-resource": true
     },
+    "ResourceAttributes": {
+      "description": "The Resource model definition.",
+      "properties": {
+        "location": {
+          "readOnly": true,
+          "type": "string",
+          "description": "Resource location"
+        },
+        "sku": {
+          "readOnly": true,
+          "type": "string",
+          "description": "Resource sku"
+        }
+      }
+    },
     "ProxyResource": {
       "description": "The Resource model definition.",
       "properties": {
diff --git a/specification/consumption/resource-manager/Microsoft.Consumption/stable/2018-03-31/examples/ReservationRecommendationsFilterByScopeLookBackPeriod.json b/specification/consumption/resource-manager/Microsoft.Consumption/stable/2018-03-31/examples/ReservationRecommendationsFilterByScopeLookBackPeriod.json
new file mode 100644
index 000000000000..a8785dded1d4
--- /dev/null
+++ b/specification/consumption/resource-manager/Microsoft.Consumption/stable/2018-03-31/examples/ReservationRecommendationsFilterByScopeLookBackPeriod.json
@@ -0,0 +1,52 @@
+{
+  "parameters": {
+    "api-version": "2018-03-31",
+    "subscriptionId": "00000000-0000-0000-0000-000000000000",
+    "$filter": "properties/scope eq 'Single' AND properties/lookBackPeriod eq 'Last7Days'"
+  },
+  "responses": {
+    "200": {
+      "body": {
+        "value": [
+          {
+            "id": "subscriptions/00000000-0000-0000-0000-000000000000/providers/Microsoft.Consumption/reservationRecommendations/reservationRecommendations1",
+            "name": "reservationRecommendations1",
+            "type": "Microsoft.Consumption/reservationRecommendations",
+            "sku": "Standard_DS1_v2",
+            "location": "northeurope",
+            "properties": {
+              "lookBackPeriod": "Last7Days",
+              "meterId": "00000000-0000-0000-0000-000000000000",
+              "term": "P1Y",
+              "costWithNoReservedInstances": 0.0,
+              "recommendedQuantity": 1,
+              "totalCostWithReservedInstances": 0.0,
+              "netSavings": 4.634521202630137,
+              "firstUsageDate": "2018-03-06T00:00:00Z",
+              "scope": "Single"
+            }
+          },
+          {
+            "id": "subscriptions/00000000-0000-0000-0000-000000000000/providers/Microsoft.Consumption/reservationRecommendations/reservationRecommendations2",
+            "name": "reservationRecommendations2",
+            "type": "Microsoft.Consumption/reservationRecommendations",
+            "sku": "Standard_DS1_v2",
+            "location": "northeurope",
+            "properties": {
+              "lookBackPeriod": "Last7Days",
+              "meterId": "00000000-0000-0000-0000-000000000000",
+              "term": "P3Y",
+              "costWithNoReservedInstances": 0.0,
+              "recommendedQuantity": 1,
+              "totalCostWithReservedInstances": 0.0,
+              "netSavings": 7.2893157231780812,
+              "firstUsageDate": "2018-03-06T00:00:00Z",
+              "scope": "Single"
+            }
+          }
+        ],
+        "nextLink" : "https://management.azure.com/subscriptions/00000000-0000-0000-0000-000000000000/providers/Microsoft.Consumption/reservationRecommendations?api-version=2018-03-31&$filter=properties/scope+eq+'Single'+AND+properties/lookBackPeriod+eq+'Last7Days'&$skiptoken=AQAAAA%3D%3D&"      
+      }
+    }
+  }
+}
\ No newline at end of file
diff --git a/specification/consumption/resource-manager/Microsoft.Consumption/stable/2018-03-31/examples/ReservationRecommendationsList.json b/specification/consumption/resource-manager/Microsoft.Consumption/stable/2018-03-31/examples/ReservationRecommendationsList.json
new file mode 100644
index 000000000000..21237a8ac071
--- /dev/null
+++ b/specification/consumption/resource-manager/Microsoft.Consumption/stable/2018-03-31/examples/ReservationRecommendationsList.json
@@ -0,0 +1,51 @@
+{
+  "parameters": {
+    "api-version": "2018-03-31",
+    "subscriptionId": "00000000-0000-0000-0000-000000000000"
+  },
+  "responses": {
+    "200": {
+      "body": {
+        "value": [
+          {
+            "id": "subscriptions/00000000-0000-0000-0000-000000000000/providers/Microsoft.Consumption/reservationRecommendations/reservationRecommendations1",
+            "name": "reservationRecommendations1",
+            "type": "Microsoft.Consumption/reservationRecommendations",
+            "sku": "Standard_DS1_v2",
+            "location": "northeurope",
+            "properties": {
+              "lookBackPeriod": "Last7Days",
+              "meterId": "00000000-0000-0000-0000-000000000000",
+              "term": "P1Y",
+              "costWithNoReservedInstances": 0.0,
+              "recommendedQuantity": 1,
+              "totalCostWithReservedInstances": 0.0,
+              "netSavings": 4.634521202630137,
+              "firstUsageDate": "2018-03-06T00:00:00Z",
+              "scope": "Single"
+            }
+          },
+          {
+            "id": "subscriptions/00000000-0000-0000-0000-000000000000/providers/Microsoft.Consumption/reservationRecommendations/reservationRecommendations2",
+            "name": "reservationRecommendations2",
+            "type": "Microsoft.Consumption/reservationRecommendations",
+            "sku": "Standard_DS1_v2",
+            "location": "northeurope",
+            "properties": {
+              "lookBackPeriod": "Last7Days",
+              "meterId": "00000000-0000-0000-0000-000000000000",
+              "term": "P3Y",
+              "costWithNoReservedInstances": 0.0,
+              "recommendedQuantity": 1,
+              "totalCostWithReservedInstances": 0.0,
+              "netSavings": 7.2893157231780812,
+              "firstUsageDate": "2018-03-06T00:00:00Z",
+              "scope": "Single"
+            }
+          }
+        ],
+        "nextLink" : "https://management.azure.com/subscriptions/00000000-0000-0000-0000-000000000000/providers/Microsoft.Consumption/reservationRecommendations?api-version=2018-03-31&$skiptoken=AQAAAA%3D%3D&"      
+      }
+    }
+  }
+}
\ No newline at end of file
diff --git a/specification/consumption/resource-manager/Microsoft.Consumption/stable/2018-03-31/examples/UsageDetailsExpand.json b/specification/consumption/resource-manager/Microsoft.Consumption/stable/2018-03-31/examples/UsageDetailsExpand.json
index 00651e1d75bb..6dc01996b8cb 100644
--- a/specification/consumption/resource-manager/Microsoft.Consumption/stable/2018-03-31/examples/UsageDetailsExpand.json
+++ b/specification/consumption/resource-manager/Microsoft.Consumption/stable/2018-03-31/examples/UsageDetailsExpand.json
@@ -4,7 +4,7 @@
     "subscriptionId": "00000000-0000-0000-0000-000000000000",
     "billingPeriodName": "201702",
     "$expand": "meterDetails,additionalProperties",
-    "$filter": "properties/usageEnd ge '2018-01-14' AND properties/usageEnd le '2018-02-14'",
+    "$filter": "properties/usageEnd ge '2018-01-14' AND properties/usageEnd le '2018-02-14' AND tags eq 'dev:tools'",
     "$top": 1
   },
   "responses": {
diff --git a/specification/consumption/resource-manager/Microsoft.Consumption/stable/2018-03-31/examples/UsageDetailsListFilterByTag.json b/specification/consumption/resource-manager/Microsoft.Consumption/stable/2018-03-31/examples/UsageDetailsListFilterByTag.json
new file mode 100644
index 000000000000..8aaa20461016
--- /dev/null
+++ b/specification/consumption/resource-manager/Microsoft.Consumption/stable/2018-03-31/examples/UsageDetailsListFilterByTag.json
@@ -0,0 +1,38 @@
+{
+  "parameters": {
+    "api-version": "2018-03-31",
+    "subscriptionId": "00000000-0000-0000-0000-000000000000",
+    "$filter": "tags eq 'dev:tools'"
+  },
+  "responses": {
+    "200": {
+      "body": {
+        "value": [
+          {
+            "id": "/subscriptions/00000000-0000-0000-0000-000000000000/providers/Microsoft.Consumption/usageDetails/usageDetailsId1",
+            "name": "usageDetailsId1",
+            "type": "Microsoft.Consumption/usageDetails",
+            "tags": {
+              "dev": "tools"
+            },
+            "properties": {
+              "billingPeriodId": "/subscriptions/00000000-0000-0000-0000-000000000000/providers/Microsoft.Billing/billingPeriods/201702",
+              "invoiceId": "/subscriptions/00000000-0000-0000-0000-000000000000/providers/Microsoft.Billing/invoices/201703-123456789",
+              "usageStart": "2017-02-13T00:00:00Z",
+              "usageEnd": "2017-02-13T23:59:59Z",
+              "instanceName": "shared1",
+              "instanceId": "/subscriptions/00000000-0000-0000-0000-000000000000/resourceGroups/Default-Web-eastasia/providers/Microsoft.Web/sites/shared1",
+              "instanceLocation": "eastasia",
+              "currency": "USD",
+              "usageQuantity": 0.00328,
+              "billableQuantity": 0.00328,
+              "pretaxCost": 0.67,
+              "isEstimated": false,
+              "meterId": "00000000-0000-0000-0000-000000000000"
+            }
+          }
+        ]
+      }
+    }
+  }
+}
\ No newline at end of file
diff --git a/specification/consumption/resource-manager/Microsoft.Consumption/stable/2018-03-31/examples/UsageDetailsListForBillingPeriodGroupByTag.json b/specification/consumption/resource-manager/Microsoft.Consumption/stable/2018-03-31/examples/UsageDetailsListForBillingPeriodGroupByTag.json
new file mode 100644
index 000000000000..287d532992d5
--- /dev/null
+++ b/specification/consumption/resource-manager/Microsoft.Consumption/stable/2018-03-31/examples/UsageDetailsListForBillingPeriodGroupByTag.json
@@ -0,0 +1,44 @@
+{
+  "parameters": {
+    "api-version": "2018-03-31",
+    "subscriptionId": "00000000-0000-0000-0000-000000000000",
+    "billingPeriodName": "201803",
+    "$apply": "groupby((tags))"
+  },
+  "responses": {
+    "200": {
+      "body": {
+        "value": [
+          {
+            "id": "subscriptions/00000000-0000-0000-0000-000000000000/providers/Microsoft.Billing/billingPeriods/20180301/providers/Microsoft.Consumption/usageDetails/usageDetailsId1",
+            "name": "usageDetailsId1",
+            "type": "Microsoft.Consumption/usageDetails",
+            "tags": {
+              "description": "Azure VCAP STA - RDS Server"
+            },
+            "properties": {
+              "billingPeriodId": "subscriptions/00000000-0000-0000-0000-000000000000/providers/Microsoft.Billing/billingPeriods/20180301",
+              "usageQuantity": 11.11111,
+              "pretaxCost": 0,
+              "currency": "USD"
+            }
+          },
+          {
+            "id": "subscriptions/00000000-0000-0000-0000-000000000000/providers/Microsoft.Billing/billingPeriods/20180301/providers/Microsoft.Consumption/usageDetails/usageDetailsId1",
+            "name": "usageDetailsId1",
+            "type": "Microsoft.Consumption/usageDetails",
+            "tags": {
+              "description": "Domain controller - STA"
+            },
+            "properties": {
+              "billingPeriodId": "subscriptions/00000000-0000-0000-0000-000000000000/providers/Microsoft.Billing/billingPeriods/20180301",
+              "usageQuantity": 111.11111111111,
+              "pretaxCost": 0,
+              "currency": "USD"
+            }
+          }
+        ]
+      }
+    }
+  }
+}
\ No newline at end of file
diff --git a/specification/consumption/resource-manager/Microsoft.Consumption/stable/2018-03-31/examples/UsageDetailsListGroupByTagDate.json b/specification/consumption/resource-manager/Microsoft.Consumption/stable/2018-03-31/examples/UsageDetailsListGroupByTagDate.json
new file mode 100644
index 000000000000..635e84e55585
--- /dev/null
+++ b/specification/consumption/resource-manager/Microsoft.Consumption/stable/2018-03-31/examples/UsageDetailsListGroupByTagDate.json
@@ -0,0 +1,47 @@
+{
+  "parameters": {
+    "api-version": "2018-03-31",
+    "subscriptionId": "00000000-0000-0000-0000-000000000000",
+    "$apply": "groupby((tags,properties/usageStart))"
+  },
+  "responses": {
+    "200": {
+      "body": {
+        "value": [
+          {
+            "id": "subscriptions/00000000-0000-0000-0000-000000000000/providers/Microsoft.Billing/billingPeriods/20180301/providers/Microsoft.Consumption/usageDetails/usageDetailsId1",
+            "name": "usageDetailsId1",
+            "type": "Microsoft.Consumption/usageDetails",
+            "tags": {
+              "description": "Azure VCAP STA - RDS Server"
+            },
+            "properties": {
+              "billingPeriodId": "subscriptions/00000000-0000-0000-0000-000000000000/providers/Microsoft.Billing/billingPeriods/20180301",
+              "usageStart": "2018-03-01T00:00:00.0000000Z",
+              "usageEnd": "2018-03-01T23:59:59.0000000Z",
+              "usageQuantity": 11.11111,
+              "pretaxCost": 0,
+              "currency": "USD"
+            }
+          },
+          {
+            "id": "subscriptions/00000000-0000-0000-0000-000000000000/providers/Microsoft.Billing/billingPeriods/20180301/providers/Microsoft.Consumption/usageDetails/usageDetailsId1",
+            "name": "usageDetailsId1",
+            "type": "Microsoft.Consumption/usageDetails",
+            "tags": {
+              "description": "Azure VCAP STA - RDS Server"
+            },
+            "properties": {
+              "billingPeriodId": "subscriptions/00000000-0000-0000-0000-000000000000/providers/Microsoft.Billing/billingPeriods/20180301",
+              "usageStart": "2018-03-02T00:00:00.0000000Z",
+              "usageEnd": "2018-03-02T23:59:59.0000000Z",
+              "usageQuantity": 1.11111111111,
+              "pretaxCost": 0,
+              "currency": "USD"
+            }
+          }
+        ]
+      }
+    }
+  }
+}
\ No newline at end of file
diff --git a/specification/consumption/resource-manager/readme.md b/specification/consumption/resource-manager/readme.md
index 2b57481024d5..b128de08e57f 100644
--- a/specification/consumption/resource-manager/readme.md
+++ b/specification/consumption/resource-manager/readme.md
@@ -98,6 +98,7 @@ This is not used by Autorest itself.
 
 ``` yaml $(swagger-to-sdk)
 swagger-to-sdk:
+  - repo: azure-sdk-for-go
   - repo: azure-sdk-for-python
 ```
 
@@ -160,10 +161,10 @@ go:
 ``` yaml $(go) && $(multiapi)
 batch:
    - tag: package-2017-04-preview
-   - tag: package-2017-11-30
-   - tag: package-2017-12-30-preview
-   - tag: package-2018-01-31
-   - tag: package-2018-03-31
+   - tag: package-2017-11
+   - tag: package-2017-12-preview
+   - tag: package-2018-01
+   - tag: package-2018-03
 ```