diff --git a/specification/containerservice/resource-manager/Microsoft.ContainerService/stable/2019-04-01/examples/MSIManagedClusterCreate_Update.json b/specification/containerservice/resource-manager/Microsoft.ContainerService/stable/2019-04-01/examples/MSIManagedClusterCreate_Update.json
new file mode 100644
index 000000000000..bfe38503e3f5
--- /dev/null
+++ b/specification/containerservice/resource-manager/Microsoft.ContainerService/stable/2019-04-01/examples/MSIManagedClusterCreate_Update.json
@@ -0,0 +1,176 @@
+{
+  "parameters": {
+    "api-version": "2019-04-01",
+    "subscriptionId": "subid1",
+    "resourceGroupName": "rg1",
+    "resourceName": "clustername1",
+    "parameters": {
+      "location": "location1",
+      "tags": {
+        "tier": "production",
+        "archv2": ""
+      },
+      "properties": {
+        "kubernetesVersion": "",
+        "dnsPrefix": "dnsprefix1",
+        "agentPoolProfiles": [
+          {
+            "name": "nodepool1",
+            "count": 3,
+            "vmSize": "Standard_DS1_v2",
+            "osType": "Linux"
+          }
+        ],
+        "linuxProfile": {
+          "adminUsername": "azureuser",
+          "ssh": {
+            "publicKeys": [
+              {
+                "keyData": "keydata"
+              }
+            ]
+          }
+        },
+        "networkProfile":{
+          "loadBalancerSku": "basic"
+        },
+        "windowsProfile": {
+          "adminUsername": "azureuser",
+          "adminPassword": "replacePassword1234$"
+        },
+        "addonProfiles": {
+        },
+        "enableRBAC": true,
+        "enablePodSecurityPolicy": true
+      },
+      "identity": {
+        "type": "SystemAssigned"
+      }
+    }
+  },
+  "responses": {
+    "200": {
+      "body": {
+        "id": "/subscriptions/subid1/resourcegroups/rg1/providers/Microsoft.ContainerService/managedClusters/clustername1",
+        "location": "location1",
+        "name": "clustername1",
+        "tags": {
+          "archv2": "",
+          "tier": "production"
+        },
+        "type": "Microsoft.ContainerService/ManagedClusters",
+        "properties": {
+          "provisioningState": "Succeeded",
+          "maxAgentPools": 1,
+          "kubernetesVersion": "1.9.6",
+          "dnsPrefix": "dnsprefix1",
+          "agentPoolProfiles": [
+            {
+              "name": "nodepool1",
+              "count": 3,
+              "vmSize": "Standard_DS1_v2",
+              "maxPods": 110,
+              "osType": "Linux",
+              "provisioningState": "Succeeded",
+              "orchestratorVersion": "1.9.6"
+            }
+          ],
+          "linuxProfile": {
+            "adminUsername": "azureuser",
+            "ssh": {
+              "publicKeys": [
+                {
+                  "keyData": "keydata"
+                }
+              ]
+            }
+          },
+          "windowsProfile": {
+            "adminUsername": "azureuser"
+          },
+          "servicePrincipalProfile": {
+            "clientId": "msi"
+          },
+          "nodeResourceGroup": "MC_rg1_clustername1_location1",
+          "enableRBAC": true,
+          "enablePodSecurityPolicy": true,
+          "fqdn": "dnsprefix1-abcd1234.hcp.eastus.azmk8s.io",
+          "networkProfile": {
+            "loadBalancerSku": "basic",
+            "networkPlugin": "kubenet",
+            "podCidr": "10.244.0.0/16",
+            "serviceCidr": "10.0.0.0/16",
+            "dnsServiceIP": "10.0.0.10",
+            "dockerBridgeCidr": "172.17.0.1/16"
+          }
+        },
+        "identity": {
+          "type": "SystemAssigned",
+          "principalId": "00630bf6-aaaa-bbbb-cccc-22cf1e3bd337",
+          "tenantId": "89e1b688-aaaa-bbbb-cccc-54d0a43a4f0d"
+        }
+      }
+    },
+    "201": {
+      "body": {
+        "id": "/subscriptions/subid1/resourcegroups/rg1/providers/Microsoft.ContainerService/managedClusters/clustername1",
+        "location": "location1",
+        "name": "clustername1",
+        "tags": {
+          "archv2": "",
+          "tier": "production"
+        },
+        "type": "Microsoft.ContainerService/ManagedClusters",
+        "properties": {
+          "provisioningState": "Creating",
+          "maxAgentPools": 1,
+          "kubernetesVersion": "1.9.6",
+          "dnsPrefix": "dnsprefix1",
+          "agentPoolProfiles": [
+            {
+              "name": "nodepool1",
+              "count": 3,
+              "vmSize": "Standard_DS1_v2",
+              "maxPods": 110,
+              "osType": "Linux",
+              "provisioningState": "Creating",
+              "orchestratorVersion": "1.9.6"
+            }
+          ],
+          "linuxProfile": {
+            "adminUsername": "azureuser",
+            "ssh": {
+              "publicKeys": [
+                {
+                  "keyData": "keydata"
+                }
+              ]
+            }
+          },
+          "windowsProfile": {
+            "adminUsername": "azureuser"
+          },
+          "servicePrincipalProfile": {
+            "clientId": "msi"
+          },
+          "nodeResourceGroup": "MC_rg1_clustername1_location1",
+          "enableRBAC": true,
+          "enablePodSecurityPolicy": true,
+          "networkProfile": {
+            "loadBalancerSku": "basic",
+            "networkPlugin": "kubenet",
+            "podCidr": "10.244.0.0/16",
+            "serviceCidr": "10.0.0.0/16",
+            "dnsServiceIP": "10.0.0.10",
+            "dockerBridgeCidr": "172.17.0.1/16"
+          }
+        },
+        "identity": {
+          "type": "SystemAssigned",
+          "principalId": "00630bf6-aaaa-bbbb-cccc-22cf1e3bd337",
+          "tenantId": "89e1b688-aaaa-bbbb-cccc-54d0a43a4f0d"
+        }
+      }
+    }
+  }
+}
diff --git a/specification/containerservice/resource-manager/Microsoft.ContainerService/stable/2019-04-01/managedClusters.json b/specification/containerservice/resource-manager/Microsoft.ContainerService/stable/2019-04-01/managedClusters.json
index 4f64f57bf1f2..6fe32a01a395 100644
--- a/specification/containerservice/resource-manager/Microsoft.ContainerService/stable/2019-04-01/managedClusters.json
+++ b/specification/containerservice/resource-manager/Microsoft.ContainerService/stable/2019-04-01/managedClusters.json
@@ -1703,6 +1703,10 @@
               "description": "Properties of a managed cluster.",
               "$ref": "#/definitions/ManagedClusterProperties",
               "x-ms-client-flatten": true
+            },
+            "identity": {
+              "$ref": "#/definitions/ManagedClusterIdentity",
+              "description": "The identity of the managed cluster, if configured."
             }
           }
         }
@@ -1791,6 +1795,33 @@
       },
       "description": "Properties of the managed cluster."
     },
+    "ManagedClusterIdentity": {
+      "properties": {
+        "principalId": {
+          "readOnly": true,
+          "type": "string",
+          "description": "The principal id of the system assigned identity which is used by master components."
+        },
+        "tenantId": {
+          "readOnly": true,
+          "type": "string",
+          "description": "The tenant id of the system assigned identity which is used by master components."
+        },
+        "type": {
+          "type": "string",
+          "description": "The type of identity used for the managed cluster. Type 'SystemAssigned' will use an implicityly created identity in master components and an auto-created user assigned identity in MC_ resource group in agent nodes. Type 'None' will not use MSI for the managed cluster, service principal will be used instead.",
+          "enum": [
+            "SystemAssigned",
+            "None"
+          ],
+          "x-ms-enum": {
+            "name": "ResourceIdentityType",
+            "modelAsString": false
+          }
+        }
+      },
+      "description": "Identity for the managed cluster."
+    },
     "OrchestratorProfile": {
       "properties": {
         "orchestratorType": {
@@ -2061,4 +2092,4 @@
       "x-ms-parameter-location": "client"
     }
   }
-}
\ No newline at end of file
+}