diff --git a/specification/streamanalytics/resource-manager/Microsoft.StreamAnalytics/preview/2021-10-01-preview/examples/Input_Create_Reference_File.json b/specification/streamanalytics/resource-manager/Microsoft.StreamAnalytics/preview/2021-10-01-preview/examples/Input_Create_Reference_File.json
index b593b05a1f0b..b7993c3ac135 100644
--- a/specification/streamanalytics/resource-manager/Microsoft.StreamAnalytics/preview/2021-10-01-preview/examples/Input_Create_Reference_File.json
+++ b/specification/streamanalytics/resource-manager/Microsoft.StreamAnalytics/preview/2021-10-01-preview/examples/Input_Create_Reference_File.json
@@ -1,6 +1,6 @@
 {
   "parameters": {
-    "api-version": "2020-03-01",
+    "api-version": "2021-10-01-preview",
     "subscriptionId": "56b5e0a9-b645-407d-99b0-c64f86013e3d",
     "resourceGroupName": "sjrg8440",
     "jobName": "sj9597",
diff --git a/specification/streamanalytics/resource-manager/Microsoft.StreamAnalytics/preview/2021-10-01-preview/examples/Input_Test.json b/specification/streamanalytics/resource-manager/Microsoft.StreamAnalytics/preview/2021-10-01-preview/examples/Input_Test.json
index 5c7961dd51c6..49fba488da9f 100644
--- a/specification/streamanalytics/resource-manager/Microsoft.StreamAnalytics/preview/2021-10-01-preview/examples/Input_Test.json
+++ b/specification/streamanalytics/resource-manager/Microsoft.StreamAnalytics/preview/2021-10-01-preview/examples/Input_Test.json
@@ -8,10 +8,17 @@
   },
   "responses": {
     "200": {
+      "headers": {
+        "Location": "https://management.azure.com/subscriptions/subscriptionId/resourceGroups/resourceGroup/providers/Microsoft.StreamAnalytics/streamingjobs/jobName/inputs/inputName?api-version=2021-10-01-preview"
+      },
       "body": {
         "status": "TestSucceeded"
       }
     },
-    "202": {}
+    "202": {
+      "headers": {
+        "Location": "https://management.azure.com/subscriptions/subscriptionId/resourceGroups/resourceGroup/providers/Microsoft.StreamAnalytics/streamingjobs/jobName/inputs/inputName?api-version=2021-10-01-preview"
+      }
+    }
   }
 }
diff --git a/specification/streamanalytics/resource-manager/Microsoft.StreamAnalytics/preview/2021-10-01-preview/examples/Output_Create_DeltaLake.json b/specification/streamanalytics/resource-manager/Microsoft.StreamAnalytics/preview/2021-10-01-preview/examples/Output_Create_DeltaLake.json
new file mode 100644
index 000000000000..21017d67b7bc
--- /dev/null
+++ b/specification/streamanalytics/resource-manager/Microsoft.StreamAnalytics/preview/2021-10-01-preview/examples/Output_Create_DeltaLake.json
@@ -0,0 +1,103 @@
+{
+  "parameters": {
+    "api-version": "2021-10-01-preview",
+    "subscriptionId": "56b5e0a9-b645-407d-99b0-c64f86013e3d",
+    "resourceGroupName": "sjrg",
+    "jobName": "sjName",
+    "outputName": "output1221",
+    "output": {
+      "properties": {
+        "datasource": {
+          "type": "Microsoft.Storage/Blob",
+          "properties": {
+            "storageAccounts": [
+              {
+                "accountName": "someAccountName",
+                "accountKey": "accountKey=="
+              }
+            ],
+            "container": "deltaoutput",
+            "pathPattern": null,
+            "dateFormat": null,
+            "timeFormat": null
+          }
+        },
+        "serialization": {
+          "type": "Delta",
+          "properties": {
+            "deltaTablePath": "/folder1/table1",
+            "partitionColumns": [
+              "column1"
+            ]
+          }
+        }
+      }
+    }
+  },
+  "responses": {
+    "201": {
+      "headers": {
+        "ETag": "219b3b09-f823-4d78-ace0-90e24c12c501"
+      },
+      "body": {
+        "id": "/subscriptions/56b5e0a9-b645-407d-99b0-c64f86013e3d/resourceGroups/sjrg/providers/Microsoft.StreamAnalytics/streamingjobs/sjName/outputs/output1221",
+        "name": "output1221",
+        "type": "Microsoft.StreamAnalytics/streamingjobs/outputs",
+        "properties": {
+          "datasource": {
+            "type": "Microsoft.Storage/Blob",
+            "properties": {
+              "storageAccounts": [
+                {
+                  "accountName": "someAccountName"
+                }
+              ],
+              "container": "deltaoutput"
+            }
+          },
+          "serialization": {
+            "type": "Delta",
+            "properties": {
+              "deltaTablePath": "/folder1/table1",
+              "partitionColumns": [
+                "column1"
+              ]
+            }
+          }
+        }
+      }
+    },
+    "200": {
+      "headers": {
+        "ETag": "219b3b09-f823-4d78-ace0-90e24c12c501"
+      },
+      "body": {
+        "id": "/subscriptions/56b5e0a9-b645-407d-99b0-c64f86013e3d/resourceGroups/sjrg/providers/Microsoft.StreamAnalytics/streamingjobs/sjName/outputs/output1221",
+        "name": "output1221",
+        "type": "Microsoft.StreamAnalytics/streamingjobs/outputs",
+        "properties": {
+          "datasource": {
+            "type": "Microsoft.Storage/Blob",
+            "properties": {
+              "storageAccounts": [
+                {
+                  "accountName": "someAccountName"
+                }
+              ],
+              "container": "deltaoutput"
+            }
+          },
+          "serialization": {
+            "type": "Delta",
+            "properties": {
+              "deltaTablePath": "/folder1/table1",
+              "partitionColumns": [
+                "column1"
+              ]
+            }
+          }
+        }
+      }
+    }
+  }
+}
diff --git a/specification/streamanalytics/resource-manager/Microsoft.StreamAnalytics/preview/2021-10-01-preview/examples/Output_Get_DeltaLake.json b/specification/streamanalytics/resource-manager/Microsoft.StreamAnalytics/preview/2021-10-01-preview/examples/Output_Get_DeltaLake.json
new file mode 100644
index 000000000000..eb08185d753d
--- /dev/null
+++ b/specification/streamanalytics/resource-manager/Microsoft.StreamAnalytics/preview/2021-10-01-preview/examples/Output_Get_DeltaLake.json
@@ -0,0 +1,43 @@
+{
+  "parameters": {
+    "api-version": "2021-10-01-preview",
+    "subscriptionId": "56b5e0a9-b645-407d-99b0-c64f86013e3d",
+    "resourceGroupName": "sjrg",
+    "jobName": "sjName",
+    "outputName": "output1221"
+  },
+  "responses": {
+    "200": {
+      "headers": {
+        "ETag": "219b3b09-f823-4d78-ace0-90e24c12c501"
+      },
+      "body": {
+        "id": "/subscriptions/56b5e0a9-b645-407d-99b0-c64f86013e3d/resourceGroups/sjrg/providers/Microsoft.StreamAnalytics/streamingjobs/sjName/outputs/output1221",
+        "name": "output1221",
+        "type": "Microsoft.StreamAnalytics/streamingjobs/outputs",
+        "properties": {
+          "datasource": {
+            "type": "Microsoft.Storage/Blob",
+            "properties": {
+              "storageAccounts": [
+                {
+                  "accountName": "someAccountName"
+                }
+              ],
+              "container": "deltaoutput"
+            }
+          },
+          "serialization": {
+            "type": "Delta",
+            "properties": {
+              "deltaTablePath": "/folder1/table1",
+              "partitionColumns": [
+                "column1"
+              ]
+            }
+          }
+        }
+      }
+    }
+  }
+}
diff --git a/specification/streamanalytics/resource-manager/Microsoft.StreamAnalytics/preview/2021-10-01-preview/examples/Output_Test.json b/specification/streamanalytics/resource-manager/Microsoft.StreamAnalytics/preview/2021-10-01-preview/examples/Output_Test.json
index b8d5cf8aa27b..a32d6ac80bf5 100644
--- a/specification/streamanalytics/resource-manager/Microsoft.StreamAnalytics/preview/2021-10-01-preview/examples/Output_Test.json
+++ b/specification/streamanalytics/resource-manager/Microsoft.StreamAnalytics/preview/2021-10-01-preview/examples/Output_Test.json
@@ -8,10 +8,17 @@
   },
   "responses": {
     "200": {
+      "headers": {
+        "Location": "https://management.azure.com/subscriptions/subscriptionId/resourceGroups/resourceGroup/providers/Microsoft.StreamAnalytics/streamingjobs/jobName/outputs/outputName?api-version=2021-10-01-preview"
+      },
       "body": {
         "status": "TestSucceeded"
       }
     },
-    "202": {}
+    "202": {
+      "headers": {
+        "Location": "https://management.azure.com/subscriptions/subscriptionId/resourceGroups/resourceGroup/providers/Microsoft.StreamAnalytics/streamingjobs/jobName/outputs/outputName?api-version=2021-10-01-preview"
+      }
+    }
   }
 }
diff --git a/specification/streamanalytics/resource-manager/Microsoft.StreamAnalytics/preview/2021-10-01-preview/examples/Output_Update_DeltaLake.json b/specification/streamanalytics/resource-manager/Microsoft.StreamAnalytics/preview/2021-10-01-preview/examples/Output_Update_DeltaLake.json
new file mode 100644
index 000000000000..1e6608742c2b
--- /dev/null
+++ b/specification/streamanalytics/resource-manager/Microsoft.StreamAnalytics/preview/2021-10-01-preview/examples/Output_Update_DeltaLake.json
@@ -0,0 +1,62 @@
+{
+  "parameters": {
+    "api-version": "2021-10-01-preview",
+    "subscriptionId": "56b5e0a9-b645-407d-99b0-c64f86013e3d",
+    "resourceGroupName": "sjrg",
+    "jobName": "sjName",
+    "outputName": "output1221",
+    "output": {
+      "properties": {
+        "datasource": {
+          "type": "Microsoft.Storage/Blob",
+          "properties": {
+            "container": "deltaoutput2"
+          }
+        },
+        "serialization": {
+          "type": "Delta",
+          "properties": {
+            "deltaTablePath": "/folder1/table2",
+            "partitionColumns": [
+              "column2"
+            ]
+          }
+        }
+      }
+    }
+  },
+  "responses": {
+    "200": {
+      "headers": {
+        "ETag": "219b3b09-f823-4d78-ace0-90e24c12c501"
+      },
+      "body": {
+        "id": "/subscriptions/56b5e0a9-b645-407d-99b0-c64f86013e3d/resourceGroups/sjrg/providers/Microsoft.StreamAnalytics/streamingjobs/sjName/outputs/output1221",
+        "name": "output1221",
+        "type": "Microsoft.StreamAnalytics/streamingjobs/outputs",
+        "properties": {
+          "datasource": {
+            "type": "Microsoft.Storage/Blob",
+            "properties": {
+              "storageAccounts": [
+                {
+                  "accountName": "someAccountName"
+                }
+              ],
+              "container": "deltaoutput2"
+            }
+          },
+          "serialization": {
+            "type": "Delta",
+            "properties": {
+              "deltaTablePath": "/folder1/table2",
+              "partitionColumns": [
+                "column2"
+              ]
+            }
+          }
+        }
+      }
+    }
+  }
+}
diff --git a/specification/streamanalytics/resource-manager/Microsoft.StreamAnalytics/preview/2021-10-01-preview/inputs.json b/specification/streamanalytics/resource-manager/Microsoft.StreamAnalytics/preview/2021-10-01-preview/inputs.json
index 0ecc594b9b5e..f932e410a572 100644
--- a/specification/streamanalytics/resource-manager/Microsoft.StreamAnalytics/preview/2021-10-01-preview/inputs.json
+++ b/specification/streamanalytics/resource-manager/Microsoft.StreamAnalytics/preview/2021-10-01-preview/inputs.json
@@ -971,13 +971,51 @@
         "Avro",
         "Json",
         "CustomClr",
-        "Parquet"
+        "Parquet",
+        "Delta"
       ],
       "x-ms-enum": {
         "name": "EventSerializationType",
         "modelAsString": true
       }
     },
+    "DeltaSerialization": {
+      "type": "object",
+      "description": "Describes how data from an input is serialized or how data is serialized when written to an output in Delta Lake format.",
+      "x-ms-discriminator-value": "Delta",
+      "allOf": [
+        {
+          "$ref": "#/definitions/Serialization"
+        }
+      ],
+      "properties": {
+        "properties": {
+          "$ref": "#/definitions/DeltaSerializationProperties",
+          "description": "The properties that are associated with the Delta Lake serialization type. Required on PUT (CreateOrReplace) requests.",
+          "x-ms-client-flatten": true
+        }
+      }
+    },
+    "DeltaSerializationProperties": {
+      "type": "object",
+      "description": "The properties that are associated with the Delta Lake serialization type.",
+      "properties": {
+        "deltaTablePath": {
+          "type": "string",
+          "description": "Specifies the path of the Delta Lake table that the output will be written to."
+        },
+        "partitionColumns": {
+          "type": "array",
+          "items": {
+            "type": "string"
+          },
+          "description": "Specifies the names of the columns for which the Delta Lake table will be partitioned. We are only supporting 1 partition column, but keeping it as an array for extensibility."
+        }
+      },
+      "required": [
+        "deltaTablePath"
+      ]
+    },
     "ParquetSerialization": {
       "type": "object",
       "description": "Describes how data from an input is serialized or how data is serialized when written to an output in Parquet format.",
diff --git a/specification/streamanalytics/resource-manager/Microsoft.StreamAnalytics/preview/2021-10-01-preview/outputs.json b/specification/streamanalytics/resource-manager/Microsoft.StreamAnalytics/preview/2021-10-01-preview/outputs.json
index 393456c0f0d0..5e7952ed3cd7 100644
--- a/specification/streamanalytics/resource-manager/Microsoft.StreamAnalytics/preview/2021-10-01-preview/outputs.json
+++ b/specification/streamanalytics/resource-manager/Microsoft.StreamAnalytics/preview/2021-10-01-preview/outputs.json
@@ -79,6 +79,9 @@
           },
           "Create a PostgreSQL output": {
             "$ref": "./examples/Output_Create_PostgreSQL.json"
+          },
+          "Create a Delta Lake output": {
+            "$ref": "./examples/Output_Create_DeltaLake.json"
           }
         },
         "parameters": [
@@ -195,6 +198,9 @@
           },
           "Update an Azure Data Lake Store output with JSON serialization": {
             "$ref": "./examples/Output_Update_AzureDataLakeStore.json"
+          },
+          "Update a Delta Lake output": {
+            "$ref": "./examples/Output_Update_DeltaLake.json"
           }
         },
         "parameters": [
@@ -334,6 +340,9 @@
           },
           "Get an Azure Data Lake Store output with JSON serialization": {
             "$ref": "./examples/Output_Get_AzureDataLakeStore_JSON.json"
+          },
+          "Get a Delta Lake output": {
+            "$ref": "./examples/Output_Get_DeltaLake.json"
           }
         },
         "parameters": [