Merge pull request #91527 from deborahc/dech-cors-update

Clarifying which APIs are relevant for CORs

Author: PRMerger20

articles/cosmos-db/how-to-configure-cross-origin-resource-sharing.md

@@ -4,16 +4,19 @@ description: This article describes how to configure Cross-Origin Resource Shari
 author: deborahc
 ms.service: cosmos-db
 ms.topic: conceptual
-ms.date: 05/23/2019
+ms.date: 10/11/2019
 ms.author: dech
 
 ---
 
 # Configure Cross-Origin Resource Sharing (CORS) 
 
-Cross-Origin Resource Sharing (CORS) is an HTTP feature that enables a web application running under one domain to access resources in another domain. Web browsers implement a security restriction known as same-origin policy that prevents a web page from calling APIs in a different domain. However, CORS provides a secure way to allow the origin domain to call APIs in another domain.Core SQL API in Azure Cosmos DB now supports Cross-Origin Resource Sharing (CORS) by using the “allowedOrigins” header. After you enable the CORS support for your Azure Cosmos account, only authenticated requests are evaluated to determine whether they are allowed according to the rules you have specified.
+Cross-Origin Resource Sharing (CORS) is an HTTP feature that enables a web application running under one domain to access resources in another domain. Web browsers implement a security restriction known as same-origin policy that prevents a web page from calling APIs in a different domain. However, CORS provides a secure way to allow the origin domain to call APIs in another domain. The Core (SQL) API in Azure Cosmos DB now supports Cross-Origin Resource Sharing (CORS) by using the “allowedOrigins” header. After you enable the CORS support for your Azure Cosmos account, only authenticated requests are evaluated to determine whether they are allowed according to the rules you have specified.
 
-You can configure the Cross-origin resource sharing (CORS) setting from the Azure portal or from an Azure Resource Manager template. Core SQL API in Azure Cosmos DB supports a JavaScript library that works in both Node.js and browser-based environments. This library can now take advantage of CORS support when using Gateway mode. There is no client-side configuration needed to use this feature. With CORS support, resources from a browser can directly access Azure Cosmos DB through the [JavaScript library](https://www.npmjs.com/package/@azure/cosmos) or directly from the [REST API](https://docs.microsoft.com/rest/api/cosmos-db/) for simple operations. 
+You can configure the Cross-origin resource sharing (CORS) setting from the Azure portal or from an Azure Resource Manager template. For Cosmos accounts using the Core (SQL) API, Azure Cosmos DB supports a JavaScript library that works in both Node.js and browser-based environments. This library can now take advantage of CORS support when using Gateway mode. There is no client-side configuration needed to use this feature. With CORS support, resources from a browser can directly access Azure Cosmos DB through the [JavaScript library](https://www.npmjs.com/package/@azure/cosmos) or directly from the [REST API](https://docs.microsoft.com/rest/api/cosmos-db/) for simple operations. 
+
+> [!NOTE]
+> CORS support is only applicable and supported for the Azure Cosmos DB Core (SQL) API. It is not applicable to the Azure Cosmos DB APIs for Cassandra, Gremlin, or MongoDB, as these protocols do not use HTTP for client-server communication. 
 
 ## Enable CORS support from Azure portal