Changed AAD to Azure AD, several instances

Author: megvanhuygen

articles/synapse-analytics/sql-data-warehouse/sql-data-warehouse-authentication.md

@@ -1,6 +1,6 @@
 ---
 title: Authentication
-description: Learn how to authenticate to Azure Synapse Analytics by using Azure Active Directory (AAD) or SQL Server authentication.
+description: Learn how to authenticate to Azure Synapse Analytics by using Azure Active Directory (Azure AD) or SQL Server authentication.
 services: synapse-analytics
 author: julieMSFT
 manager: craigg
@@ -16,7 +16,7 @@ tag: azure-synapse
 
 # Authenticate to Azure Synapse Analytics
 
-Learn how to authenticate to Synapse SQL poool in Azure Synapse by using Azure Active Directory (AAD) or SQL Server authentication.
+Learn how to authenticate to Synapse SQL poool in Azure Synapse by using Azure Active Directory (Azure AD) or SQL Server authentication.
 
 To connect to a SQL pool, you must pass in security credentials for authentication purposes. Upon establishing a connection, certain connection settings are configured as part of establishing your query session.  
 
@@ -42,7 +42,7 @@ By default, your connection connects to the *master* database and not your user
 > 
 > 
 
-## Azure Active Directory (AAD) authentication
+## Azure Active Directory (Azure AD) authentication
 
 [Azure Active Directory](../../active-directory/fundamentals/active-directory-whatis.md) authentication is a mechanism of connecting to SQL pool by using identities in Azure Active Directory (Azure AD). With Azure Active Directory authentication, you can centrally manage the identities of database users and other Microsoft services in one central location. Central ID management provides a single place to manage Azure Synapse users and simplifies permission management. 
 
@@ -53,7 +53,7 @@ Azure Active Directory benefits include:
 * Provides an alternative to SQL Server authentication.
 * Helps stop the proliferation of user identities across database servers.
 * Allows password rotation in a single place
-* Manage database permissions using external (AAD) groups.
+* Manage database permissions using external (Azure AD) groups.
 * Eliminates storing passwords by enabling integrated Windows authentication and other forms of authentication supported by Azure Active Directory.
 * Uses contained database users to authenticate identities at the database level.
 * Supports token-based authentication for applications connecting to SQL pool.