diff --git a/specification/securityinsights/resource-manager/Microsoft.SecurityInsights/stable/2020-01-01/SecurityInsights.json b/specification/securityinsights/resource-manager/Microsoft.SecurityInsights/stable/2020-01-01/SecurityInsights.json
index 9285c576a626..1e038509f7c1 100644
--- a/specification/securityinsights/resource-manager/Microsoft.SecurityInsights/stable/2020-01-01/SecurityInsights.json
+++ b/specification/securityinsights/resource-manager/Microsoft.SecurityInsights/stable/2020-01-01/SecurityInsights.json
@@ -805,6 +805,9 @@
           },
           "Get a MDATP data connector": {
             "$ref": "./examples/dataConnectors/GetMicrosoftDefenderAdvancedThreatProtectionById.json"
+          },
+          "Get a Dynamics365 data connector": {
+            "$ref": "./examples/dataConnectors/GetDynamics365DataConnectorById.json"
           }
         },
         "tags": [
@@ -851,6 +854,9 @@
           },
           "Creates or updates an Threat Intelligence Platform data connector.": {
             "$ref": "./examples/dataConnectors/CreateThreatIntelligenceDataConnector.json"
+          },
+          "Creates or updates a Dynamics365 data connector.": {
+            "$ref": "./examples/dataConnectors/CreateDynamics365DataConnetor.json"
           }
         },
         "tags": [
@@ -1972,7 +1978,8 @@
         "Office365",
         "AmazonWebServicesCloudTrail",
         "AzureAdvancedThreatProtection",
-        "MicrosoftDefenderAdvancedThreatProtection"
+        "MicrosoftDefenderAdvancedThreatProtection",
+        "Dynamics365"
       ],
       "type": "string",
       "x-ms-enum": {
@@ -2002,6 +2009,9 @@
           },
           {
             "value": "MicrosoftDefenderAdvancedThreatProtection"
+          },
+          {
+            "value": "Dynamics365"
           }
         ]
       }
@@ -2046,6 +2056,59 @@
       },
       "type": "object"
     },
+    "Dynamics365DataConnector": {
+      "allOf": [
+        {
+          "$ref": "#/definitions/DataConnector"
+        }
+      ],
+      "description": "Represents Dynamics365 data connector.",
+      "properties": {
+        "properties": {
+          "$ref": "#/definitions/Dynamics365DataConnectorProperties",
+          "description": "Dynamics365 data connector properties.",
+          "x-ms-client-flatten": true
+        }
+      },
+      "type": "object",
+      "x-ms-discriminator-value": "Dynamics365"
+    },
+    "Dynamics365DataConnectorDataTypes": {
+      "description": "The available data types for Dynamics365 data connector.",
+      "properties": {
+        "dynamics365CdsActivities": {
+          "allOf": [
+            {
+              "$ref": "#/definitions/DataConnectorDataTypeCommon"
+            }
+          ],
+          "description": "Common Data Service data type connection.",
+          "type": "object"
+        }
+      },
+      "type": "object",
+      "required": [
+        "dynamics365CdsActivities"
+      ]
+    },
+    "Dynamics365DataConnectorProperties": {
+      "allOf": [
+        {
+          "$ref": "#/definitions/DataConnectorTenantId"
+        }
+      ],
+      "description": "Dynamics365 data connector properties.",
+      "properties": {
+        "dataTypes": {
+          "$ref": "#/definitions/Dynamics365DataConnectorDataTypes",
+          "description": "The available data types for the connector."
+        }
+      },
+      "required": [
+        "dataTypes"
+      ],
+      "type": "object"
+    },
     "FusionAlertRule": {
       "allOf": [
         {
diff --git a/specification/securityinsights/resource-manager/Microsoft.SecurityInsights/stable/2020-01-01/examples/dataConnectors/CreateDynamics365DataConnetor.json b/specification/securityinsights/resource-manager/Microsoft.SecurityInsights/stable/2020-01-01/examples/dataConnectors/CreateDynamics365DataConnetor.json
new file mode 100644
index 000000000000..27bddfce5d29
--- /dev/null
+++ b/specification/securityinsights/resource-manager/Microsoft.SecurityInsights/stable/2020-01-01/examples/dataConnectors/CreateDynamics365DataConnetor.json
@@ -0,0 +1,58 @@
+{
+  "parameters": {
+    "api-version": "2020-01-01",
+    "subscriptionId": "d0cfe6b2-9ac0-4464-9919-dccaee2e48c0",
+    "resourceGroupName": "myRg",
+    "workspaceName": "myWorkspace",
+    "operationalInsightsResourceProvider": "Microsoft.OperationalInsights",
+    "dataConnectorId": "c2541efb-c9a6-47fe-9501-87d1017d1512",
+    "dataConnector": {
+      "kind": "Dynamics365",
+      "etag": "\"0300bf09-0000-0000-0000-5c37296e0000\"",
+      "properties": {
+        "tenantId": "2070ecc9-b4d5-4ae4-adaa-936fa1954fa8",
+        "dataTypes": {
+          "dynamics365CdsActivities": {
+            "state": "Enabled"
+          }
+        }
+      }
+    }
+  },
+  "responses": {
+    "200": {
+      "body": {
+        "id": "/subscriptions/d0cfe6b2-9ac0-4464-9919-dccaee2e48c0/resourceGroups/myRg/providers/Microsoft.OperationalInsights/workspaces/myWorkspace/providers/Microsoft.SecurityInsights/dataConnectors/73e01a99-5cd7-4139-a149-9f2736ff2ab5",
+        "name": "c2541efb-c9a6-47fe-9501-87d1017d1512",
+        "type": "Microsoft.SecurityInsights/dataConnectors",
+        "kind": "Dynamics365",
+        "etag": "\"0300bf09-0000-0000-0000-5c37296e0000\"",
+        "properties": {
+          "tenantId": "2070ecc9-b4d5-4ae4-adaa-936fa1954fa8",
+          "dataTypes": {
+            "dynamics365CdsActivities": {
+              "state": "Enabled"
+            }
+          }
+        }
+      }
+    },
+    "201": {
+      "body": {
+        "id": "/subscriptions/d0cfe6b2-9ac0-4464-9919-dccaee2e48c0/resourceGroups/myRg/providers/Microsoft.OperationalInsights/workspaces/myWorkspace/providers/Microsoft.SecurityInsights/dataConnectors/73e01a99-5cd7-4139-a149-9f2736ff2ab5",
+        "name": "c2541efb-c9a6-47fe-9501-87d1017d1512",
+        "type": "Microsoft.SecurityInsights/dataConnectors",
+        "kind": "Dynamics365",
+        "etag": "\"0300bf09-0000-0000-0000-5c37296e0000\"",
+        "properties": {
+          "tenantId": "2070ecc9-b4d5-4ae4-adaa-936fa1954fa8",
+          "dataTypes": {
+            "dynamics365CdsActivities": {
+              "state": "Enabled"
+            }
+          }
+        }
+      }
+    }
+  }
+}
diff --git a/specification/securityinsights/resource-manager/Microsoft.SecurityInsights/stable/2020-01-01/examples/dataConnectors/GetDynamics365DataConnectorById.json b/specification/securityinsights/resource-manager/Microsoft.SecurityInsights/stable/2020-01-01/examples/dataConnectors/GetDynamics365DataConnectorById.json
new file mode 100644
index 000000000000..0b8df227cd65
--- /dev/null
+++ b/specification/securityinsights/resource-manager/Microsoft.SecurityInsights/stable/2020-01-01/examples/dataConnectors/GetDynamics365DataConnectorById.json
@@ -0,0 +1,29 @@
+{
+  "parameters": {
+    "api-version": "2020-01-01",
+    "subscriptionId": "d0cfe6b2-9ac0-4464-9919-dccaee2e48c0",
+    "resourceGroupName": "myRg",
+    "workspaceName": "myWorkspace",
+    "operationalInsightsResourceProvider": "Microsoft.OperationalInsights",
+    "dataConnectorId": "c2541efb-c9a6-47fe-9501-87d1017d1512"
+  },
+  "responses": {
+    "200": {
+      "body": {
+        "id": "/subscriptions/d0cfe6b2-9ac0-4464-9919-dccaee2e48c0/resourceGroups/myRg/providers/Microsoft.OperationalInsights/workspaces/myWorkspace/providers/Microsoft.SecurityInsights/dataConnectors/3d3e955e-33eb-401d-89a7-251c81ddd660",
+        "name": "c2541efb-c9a6-47fe-9501-87d1017d1512",
+        "type": "Microsoft.SecurityInsights/dataConnectors",
+        "kind": "Dynamics365",
+        "etag": "\"0300bf09-0000-0000-0000-5c37296e0000\"",
+        "properties": {
+          "tenantId": "2070ecc9-b4d5-4ae4-adaa-936fa1954fa8",
+          "dataTypes": {
+            "dynamics365CdsActivities": {
+              "state": "Enabled"
+            }
+          }
+        }
+      }
+    }
+  }
+}