diff --git a/specification/search/data-plane/Azure.Search/preview/2019-05-06-preview/examples/SearchServiceCreateSkillset.json b/specification/search/data-plane/Azure.Search/preview/2019-05-06-preview/examples/SearchServiceCreateSkillset.json
index e3335335eeba..c81b171f3c3d 100644
--- a/specification/search/data-plane/Azure.Search/preview/2019-05-06-preview/examples/SearchServiceCreateSkillset.json
+++ b/specification/search/data-plane/Azure.Search/preview/2019-05-06-preview/examples/SearchServiceCreateSkillset.json
@@ -109,7 +109,53 @@
           ],
           "httpHeaders": {}
         }
-      ]
+      ],
+      "knowledgeStore": {
+        "storageConnectionString": "DefaultEndpointsProtocol=https;AccountName=myStorage;AccountKey=myStorageKey;EndpointSuffix=core.windows.net",
+        "projections": [
+          {
+            "tables": [
+              {
+                "tableName": "Reviews",
+                "generatedKeyName": "ReviewId",
+                "source": "/document/Review",
+                "sourceContext": null,
+                "inputs": []
+              },
+              {
+                "tableName": "Sentences",
+                "generatedKeyName": "SentenceId",
+                "source": "/document/Review/Sentences/*",
+                "sourceContext": null,
+                "inputs": []
+              },
+              {
+                "tableName": "KeyPhrases",
+                "generatedKeyName": "KeyPhraseId",
+                "source": "/document/Review/Sentences/*/KeyPhrases",
+                "sourceContext": null,
+                "inputs": []
+              },
+              {
+                "tableName": "Entities",
+                "generatedKeyName": "EntityId",
+                "source": "/document/Review/Sentences/*/Entities/*",
+                "sourceContext": null,
+                "inputs": []
+              }
+            ]
+          },
+          {
+            "objects": [
+              {
+                "storageContainer": "Reviews",
+                "source": "/document/Review",
+                "generatedKeyName": "/document/Review/Id"
+              }
+            ]
+          }
+        ]
+      }
     }
   },
   "responses": {
diff --git a/specification/search/data-plane/Azure.Search/preview/2019-05-06-preview/searchservice.json b/specification/search/data-plane/Azure.Search/preview/2019-05-06-preview/searchservice.json
index b38d48f31401..46360f2b226b 100644
--- a/specification/search/data-plane/Azure.Search/preview/2019-05-06-preview/searchservice.json
+++ b/specification/search/data-plane/Azure.Search/preview/2019-05-06-preview/searchservice.json
@@ -6822,6 +6822,10 @@
           "$ref": "#/definitions/CognitiveServicesAccount",
           "description": "Details about cognitive services to be used when running skills."
         },
+        "knowledgeStore": {
+          "$ref": "#/definitions/SearchIndexerKnowledgeStore",
+          "description": "Definition of additional projections to azure blob, table, or files, of enriched data."
+        },
         "@odata.etag": {
           "x-ms-client-name": "ETag",
           "type": "string",
@@ -6881,6 +6885,138 @@
         "key"
       ]
     },
+    "SearchIndexerKnowledgeStore": {
+      "properties": {
+        "storageConnectionString": {
+          "type": "string",
+          "description": "The connection string to the storage account projections will be stored in."
+        },
+        "projections": {
+          "type": "array",
+          "items": {
+            "$ref": "#/definitions/SearchIndexerKnowledgeStoreProjection",
+            "x-nullable": false
+          },
+          "description": "A list of additional projections to perform during indexing."
+        }
+      },
+      "required": [
+        "storageConnectionString",
+        "projections"
+      ],
+      "externalDocs": {
+        "url": "https://docs.microsoft.com/azure/search/knowledge-store-projection-overview"
+      },
+      "description": "Definition of additional projections to azure blob, table, or files, of enriched data."
+    },
+    "SearchIndexerKnowledgeStoreProjection": {
+      "properties": {
+        "tables": {
+          "type": "array",
+          "items": {
+            "$ref": "#/definitions/SearchIndexerKnowledgeStoreTableProjectionSelector",
+            "x-nullable": false
+          },
+          "description": "Projections to Azure Table storage."
+        },
+        "objects": {
+          "type": "array",
+          "items": {
+            "$ref": "#/definitions/SearchIndexerKnowledgeStoreObjectProjectionSelector",
+            "x-nullable": false
+          },
+          "description": "Projections to Azure Blob storage."
+        },
+        "files": {
+          "type": "array",
+          "items": {
+            "$ref": "#/definitions/SearchIndexerKnowledgeStoreFileProjectionSelector",
+            "x-nullable": false
+          },
+          "description": "Projections to Azure File storage."
+        }
+      },
+      "description": "Container object for various projection selectors."
+    },
+    "SearchIndexerKnowledgeStoreProjectionSelector": {
+      "properties": {
+        "referenceKeyName": {
+          "type": "string",
+          "description": "Name of reference key to different projection."
+        },
+        "generatedKeyName": {
+          "type": "string",
+          "description": "Name of generated key to store projection under."
+        },
+        "source": {
+          "type": "string",
+          "description": "Source data to project."
+        },
+        "sourceContext": {
+          "type": "string",
+          "description": "Source context for complex projections."
+        },
+        "inputs": {
+          "type": "array",
+          "items": {
+            "$ref": "#/definitions/InputFieldMappingEntry"
+          },
+          "description": "Nested inputs for complex projections."
+        }
+      },
+      "description": "Abstract class to share properties between concrete selectors."
+    },
+    "SearchIndexerKnowledgeStoreBlobProjectionSelector": {
+      "properties": {
+        "storageContainer": {
+          "type": "string",
+          "description": "Blob container to store projections in."
+        }
+      },
+      "allOf": [
+        {
+          "$ref": "#/definitions/SearchIndexerKnowledgeStoreProjectionSelector"
+        }
+      ],
+      "required": [
+        "storageContainer"
+      ],
+      "description": "Abstract class to share properties between concrete selectors."
+    },
+    "SearchIndexerKnowledgeStoreTableProjectionSelector": {
+      "properties": {
+        "tableName": {
+          "type": "string",
+          "description": "Name of the Azure table to store projected data in."
+        }
+      },
+      "required": [
+        "generatedKeyName",
+        "tableName"
+      ],
+      "allOf": [
+        {
+          "$ref": "#/definitions/SearchIndexerKnowledgeStoreProjectionSelector"
+        }
+      ],
+      "description": "Description for what data to store in Azure Tables."
+    },
+    "SearchIndexerKnowledgeStoreObjectProjectionSelector": {
+      "allOf": [
+        {
+          "$ref": "#/definitions/SearchIndexerKnowledgeStoreBlobProjectionSelector"
+        }
+      ],
+      "description": "Projection definition for what data to store in Azure Blob."
+    },
+    "SearchIndexerKnowledgeStoreFileProjectionSelector": {
+      "allOf": [
+        {
+          "$ref": "#/definitions/SearchIndexerKnowledgeStoreBlobProjectionSelector"
+        }
+      ],
+      "description": "Projection definition for what data to store in Azure Files."
+    },
     "SearchIndexerSkill": {
       "discriminator": "@odata.type",
       "properties": {
diff --git a/specification/search/data-plane/Azure.Search/preview/2020-06-30-Preview/examples/SearchServiceCreateSkillset.json b/specification/search/data-plane/Azure.Search/preview/2020-06-30-Preview/examples/SearchServiceCreateSkillset.json
index f5add28c77ae..04824a8cff6c 100644
--- a/specification/search/data-plane/Azure.Search/preview/2020-06-30-Preview/examples/SearchServiceCreateSkillset.json
+++ b/specification/search/data-plane/Azure.Search/preview/2020-06-30-Preview/examples/SearchServiceCreateSkillset.json
@@ -110,6 +110,52 @@
           "httpHeaders": {}
         }
       ],
+      "knowledgeStore": {
+        "storageConnectionString": "DefaultEndpointsProtocol=https;AccountName=myStorage;AccountKey=myStorageKey;EndpointSuffix=core.windows.net",
+        "projections": [
+          {
+            "tables": [
+              {
+                "tableName": "Reviews",
+                "generatedKeyName": "ReviewId",
+                "source": "/document/Review",
+                "sourceContext": null,
+                "inputs": []
+              },
+              {
+                "tableName": "Sentences",
+                "generatedKeyName": "SentenceId",
+                "source": "/document/Review/Sentences/*",
+                "sourceContext": null,
+                "inputs": []
+              },
+              {
+                "tableName": "KeyPhrases",
+                "generatedKeyName": "KeyPhraseId",
+                "source": "/document/Review/Sentences/*/KeyPhrases",
+                "sourceContext": null,
+                "inputs": []
+              },
+              {
+                "tableName": "Entities",
+                "generatedKeyName": "EntityId",
+                "source": "/document/Review/Sentences/*/Entities/*",
+                "sourceContext": null,
+                "inputs": []
+              }
+            ]
+          },
+          {
+            "objects": [
+              {
+                "storageContainer": "Reviews",
+                "source": "/document/Review",
+                "generatedKeyName": "/document/Review/Id"
+              }
+            ]
+          }
+        ]
+      },
       "encryptionKey": {
         "keyVaultKeyName": "myUserManagedEncryptionKey-createdinAzureKeyVault",
         "keyVaultKeyVersion": "myKeyVersion-32charAlphaNumericString",
diff --git a/specification/search/data-plane/Azure.Search/preview/2020-06-30-Preview/searchservice.json b/specification/search/data-plane/Azure.Search/preview/2020-06-30-Preview/searchservice.json
index b92738e00a76..410f7d059457 100644
--- a/specification/search/data-plane/Azure.Search/preview/2020-06-30-Preview/searchservice.json
+++ b/specification/search/data-plane/Azure.Search/preview/2020-06-30-Preview/searchservice.json
@@ -7215,6 +7215,10 @@
           "$ref": "#/definitions/CognitiveServicesAccount",
           "description": "Details about cognitive services to be used when running skills."
         },
+        "knowledgeStore": {
+          "$ref": "#/definitions/SearchIndexerKnowledgeStore",
+          "description": "Definition of additional projections to azure blob, table, or files, of enriched data."
+        },
         "@odata.etag": {
           "x-ms-client-name": "ETag",
           "type": "string",
@@ -7255,6 +7259,138 @@
       ],
       "description": "Base type for describing any cognitive service resource attached to a skillset."
     },
+    "SearchIndexerKnowledgeStore": {
+      "properties": {
+        "storageConnectionString": {
+          "type": "string",
+          "description": "The connection string to the storage account projections will be stored in."
+        },
+        "projections": {
+          "type": "array",
+          "items": {
+            "$ref": "#/definitions/SearchIndexerKnowledgeStoreProjection",
+            "x-nullable": false
+          },
+          "description": "A list of additional projections to perform during indexing."
+        }
+      },
+      "required": [
+        "storageConnectionString",
+        "projections"
+      ],
+      "externalDocs": {
+        "url": "https://docs.microsoft.com/azure/search/knowledge-store-projection-overview"
+      },
+      "description": "Definition of additional projections to azure blob, table, or files, of enriched data."
+    },
+    "SearchIndexerKnowledgeStoreProjection": {
+      "properties": {
+        "tables": {
+          "type": "array",
+          "items": {
+            "$ref": "#/definitions/SearchIndexerKnowledgeStoreTableProjectionSelector",
+            "x-nullable": false
+          },
+          "description": "Projections to Azure Table storage."
+        },
+        "objects": {
+          "type": "array",
+          "items": {
+            "$ref": "#/definitions/SearchIndexerKnowledgeStoreObjectProjectionSelector",
+            "x-nullable": false
+          },
+          "description": "Projections to Azure Blob storage."
+        },
+        "files": {
+          "type": "array",
+          "items": {
+            "$ref": "#/definitions/SearchIndexerKnowledgeStoreFileProjectionSelector",
+            "x-nullable": false
+          },
+          "description": "Projections to Azure File storage."
+        }
+      },
+      "description": "Container object for various projection selectors."
+    },
+    "SearchIndexerKnowledgeStoreProjectionSelector": {
+      "properties": {
+        "referenceKeyName": {
+          "type": "string",
+          "description": "Name of reference key to different projection."
+        },
+        "generatedKeyName": {
+          "type": "string",
+          "description": "Name of generated key to store projection under."
+        },
+        "source": {
+          "type": "string",
+          "description": "Source data to project."
+        },
+        "sourceContext": {
+          "type": "string",
+          "description": "Source context for complex projections."
+        },
+        "inputs": {
+          "type": "array",
+          "items": {
+            "$ref": "#/definitions/InputFieldMappingEntry"
+          },
+          "description": "Nested inputs for complex projections."
+        }
+      },
+      "description": "Abstract class to share properties between concrete selectors."
+    },
+    "SearchIndexerKnowledgeStoreBlobProjectionSelector": {
+      "properties": {
+        "storageContainer": {
+          "type": "string",
+          "description": "Blob container to store projections in."
+        }
+      },
+      "allOf": [
+        {
+          "$ref": "#/definitions/SearchIndexerKnowledgeStoreProjectionSelector"
+        }
+      ],
+      "required": [
+        "storageContainer"
+      ],
+      "description": "Abstract class to share properties between concrete selectors."
+    },
+    "SearchIndexerKnowledgeStoreTableProjectionSelector": {
+      "properties": {
+        "tableName": {
+          "type": "string",
+          "description": "Name of the Azure table to store projected data in."
+        }
+      },
+      "required": [
+        "generatedKeyName",
+        "tableName"
+      ],
+      "allOf": [
+        {
+          "$ref": "#/definitions/SearchIndexerKnowledgeStoreProjectionSelector"
+        }
+      ],
+      "description": "Description for what data to store in Azure Tables."
+    },
+    "SearchIndexerKnowledgeStoreObjectProjectionSelector": {
+      "allOf": [
+        {
+          "$ref": "#/definitions/SearchIndexerKnowledgeStoreBlobProjectionSelector"
+        }
+      ],
+      "description": "Projection definition for what data to store in Azure Blob."
+    },
+    "SearchIndexerKnowledgeStoreFileProjectionSelector": {
+      "allOf": [
+        {
+          "$ref": "#/definitions/SearchIndexerKnowledgeStoreBlobProjectionSelector"
+        }
+      ],
+      "description": "Projection definition for what data to store in Azure Files."
+    },
     "DefaultCognitiveServicesAccount": {
       "description": "An empty object that represents the default cognitive service resource for a skillset.",
       "x-ms-discriminator-value": "#Microsoft.Azure.Search.DefaultCognitiveServices",
diff --git a/specification/search/data-plane/Azure.Search/preview/2020-06-30/examples/SearchServiceCreateSkillset.json b/specification/search/data-plane/Azure.Search/preview/2020-06-30/examples/SearchServiceCreateSkillset.json
index bc539fd71f3e..b729782f4025 100644
--- a/specification/search/data-plane/Azure.Search/preview/2020-06-30/examples/SearchServiceCreateSkillset.json
+++ b/specification/search/data-plane/Azure.Search/preview/2020-06-30/examples/SearchServiceCreateSkillset.json
@@ -110,6 +110,52 @@
           "httpHeaders": {}
         }
       ],
+      "knowledgeStore": {
+        "storageConnectionString": "DefaultEndpointsProtocol=https;AccountName=myStorage;AccountKey=myStorageKey;EndpointSuffix=core.windows.net",
+        "projections": [
+          {
+            "tables": [
+              {
+                "tableName": "Reviews",
+                "generatedKeyName": "ReviewId",
+                "source": "/document/Review",
+                "sourceContext": null,
+                "inputs": []
+              },
+              {
+                "tableName": "Sentences",
+                "generatedKeyName": "SentenceId",
+                "source": "/document/Review/Sentences/*",
+                "sourceContext": null,
+                "inputs": []
+              },
+              {
+                "tableName": "KeyPhrases",
+                "generatedKeyName": "KeyPhraseId",
+                "source": "/document/Review/Sentences/*/KeyPhrases",
+                "sourceContext": null,
+                "inputs": []
+              },
+              {
+                "tableName": "Entities",
+                "generatedKeyName": "EntityId",
+                "source": "/document/Review/Sentences/*/Entities/*",
+                "sourceContext": null,
+                "inputs": []
+              }
+            ]
+          },
+          {
+            "objects": [
+              {
+                "storageContainer": "Reviews",
+                "source": "/document/Review",
+                "generatedKeyName": "/document/Review/Id"
+              }
+            ]
+          }
+        ]
+      },
       "encryptionKey": {
         "keyVaultKeyName": "myUserManagedEncryptionKey-createdinAzureKeyVault",
         "keyVaultKeyVersion": "myKeyVersion-32charAlphaNumericString",
diff --git a/specification/search/data-plane/Azure.Search/preview/2020-06-30/searchservice.json b/specification/search/data-plane/Azure.Search/preview/2020-06-30/searchservice.json
index 2a83a87ab347..b682594bdfd1 100644
--- a/specification/search/data-plane/Azure.Search/preview/2020-06-30/searchservice.json
+++ b/specification/search/data-plane/Azure.Search/preview/2020-06-30/searchservice.json
@@ -7102,6 +7102,10 @@
           "$ref": "#/definitions/CognitiveServicesAccount",
           "description": "Details about cognitive services to be used when running skills."
         },
+        "knowledgeStore": {
+          "$ref": "#/definitions/SearchIndexerKnowledgeStore",
+          "description": "Definition of additional projections to azure blob, table, or files, of enriched data."
+        },
         "@odata.etag": {
           "x-ms-client-name": "ETag",
           "type": "string",
@@ -7142,6 +7146,138 @@
       ],
       "description": "Base type for describing any cognitive service resource attached to a skillset."
     },
+    "SearchIndexerKnowledgeStore": {
+      "properties": {
+        "storageConnectionString": {
+          "type": "string",
+          "description": "The connection string to the storage account projections will be stored in."
+        },
+        "projections": {
+          "type": "array",
+          "items": {
+            "$ref": "#/definitions/SearchIndexerKnowledgeStoreProjection",
+            "x-nullable": false
+          },
+          "description": "A list of additional projections to perform during indexing."
+        }
+      },
+      "required": [
+        "storageConnectionString",
+        "projections"
+      ],
+      "externalDocs": {
+        "url": "https://docs.microsoft.com/azure/search/knowledge-store-projection-overview"
+      },
+      "description": "Definition of additional projections to azure blob, table, or files, of enriched data."
+    },
+    "SearchIndexerKnowledgeStoreProjection": {
+      "properties": {
+        "tables": {
+          "type": "array",
+          "items": {
+            "$ref": "#/definitions/SearchIndexerKnowledgeStoreTableProjectionSelector",
+            "x-nullable": false
+          },
+          "description": "Projections to Azure Table storage."
+        },
+        "objects": {
+          "type": "array",
+          "items": {
+            "$ref": "#/definitions/SearchIndexerKnowledgeStoreObjectProjectionSelector",
+            "x-nullable": false
+          },
+          "description": "Projections to Azure Blob storage."
+        },
+        "files": {
+          "type": "array",
+          "items": {
+            "$ref": "#/definitions/SearchIndexerKnowledgeStoreFileProjectionSelector",
+            "x-nullable": false
+          },
+          "description": "Projections to Azure File storage."
+        }
+      },
+      "description": "Container object for various projection selectors."
+    },
+    "SearchIndexerKnowledgeStoreProjectionSelector": {
+      "properties": {
+        "referenceKeyName": {
+          "type": "string",
+          "description": "Name of reference key to different projection."
+        },
+        "generatedKeyName": {
+          "type": "string",
+          "description": "Name of generated key to store projection under."
+        },
+        "source": {
+          "type": "string",
+          "description": "Source data to project."
+        },
+        "sourceContext": {
+          "type": "string",
+          "description": "Source context for complex projections."
+        },
+        "inputs": {
+          "type": "array",
+          "items": {
+            "$ref": "#/definitions/InputFieldMappingEntry"
+          },
+          "description": "Nested inputs for complex projections."
+        }
+      },
+      "description": "Abstract class to share properties between concrete selectors."
+    },
+    "SearchIndexerKnowledgeStoreBlobProjectionSelector": {
+      "properties": {
+        "storageContainer": {
+          "type": "string",
+          "description": "Blob container to store projections in."
+        }
+      },
+      "allOf": [
+        {
+          "$ref": "#/definitions/SearchIndexerKnowledgeStoreProjectionSelector"
+        }
+      ],
+      "required": [
+        "storageContainer"
+      ],
+      "description": "Abstract class to share properties between concrete selectors."
+    },
+    "SearchIndexerKnowledgeStoreTableProjectionSelector": {
+      "properties": {
+        "tableName": {
+          "type": "string",
+          "description": "Name of the Azure table to store projected data in."
+        }
+      },
+      "required": [
+        "generatedKeyName",
+        "tableName"
+      ],
+      "allOf": [
+        {
+          "$ref": "#/definitions/SearchIndexerKnowledgeStoreProjectionSelector"
+        }
+      ],
+      "description": "Description for what data to store in Azure Tables."
+    },
+    "SearchIndexerKnowledgeStoreObjectProjectionSelector": {
+      "allOf": [
+        {
+          "$ref": "#/definitions/SearchIndexerKnowledgeStoreBlobProjectionSelector"
+        }
+      ],
+      "description": "Projection definition for what data to store in Azure Blob."
+    },
+    "SearchIndexerKnowledgeStoreFileProjectionSelector": {
+      "allOf": [
+        {
+          "$ref": "#/definitions/SearchIndexerKnowledgeStoreBlobProjectionSelector"
+        }
+      ],
+      "description": "Projection definition for what data to store in Azure Files."
+    },
     "DefaultCognitiveServicesAccount": {
       "description": "An empty object that represents the default cognitive service resource for a skillset.",
       "x-ms-discriminator-value": "#Microsoft.Azure.Search.DefaultCognitiveServices",