Merge pull request #188363 from Justinha/endpoint

added link to Azure gov

Author: PRMerger10

articles/active-directory/authentication/concept-certificate-based-authentication-technical-deep-dive.md

@@ -6,12 +6,12 @@ services: active-directory
 ms.service: active-directory
 ms.subservice: authentication
 ms.topic: how-to
-ms.date: 02/09/2022
+ms.date: 02/15/2022
 
 ms.author: justinha
 author: vimrang
 manager: daveba
-ms.reviewer: tommma
+ms.reviewer: vimrang
 
 ms.collection: M365-identity-device-management
 ms.custom: has-adal-ref
@@ -49,7 +49,9 @@ Let's cover each step:
 
    :::image type="content" border="true" source="./media/concept-certificate-based-authentication-technical-deep-dive/sign-in-alt.png" alt-text="Screenshot of the Sign-in if FIDO2 is also enabled.":::
 
-1. After the user clicks the link, the client is redirected to the certauth endpoint [http://certauth.login.microsoftonline.com](http://certauth.login.microsoftonline.com). The endpoint performs mutual authentication and requests the client certificate as part of the TLS handshake. You will see an entry for this request in the Sign-in logs. There is a [known issue](#known-issues) where User ID is displayed instead of Username.
+1. After the user clicks the link, the client is redirected to the certauth endpoint, which is [http://certauth.login.microsoftonline.com](http://certauth.login.microsoftonline.com) for Azure Global. For [Azure Government](/azure-government/compare-azure-government-global-azure.md#guidance-for-developers), the certauth endpoint is [http://certauth.login.microsoftonline.us](http://certauth.login.microsoftonline.us). For the correct endpoint for other environments, see the specific Microsoft cloud docs. 
+
+   The endpoint performs mutual authentication and requests the client certificate as part of the TLS handshake. You will see an entry for this request in the Sign-in logs. There is a [known issue](#known-issues) where User ID is displayed instead of Username.
 
    :::image type="content" border="true" source="./media/concept-certificate-based-authentication-technical-deep-dive/sign-in-log.png" alt-text="Screenshot of the Sign-in log in Azure AD." lightbox="./media/concept-certificate-based-authentication-technical-deep-dive/sign-in-log.png":::
 

articles/azure-government/compare-azure-government-global-azure.md

@@ -7,7 +7,7 @@ author: stevevi
 ms.author: stevevi
 ms.custom: references_regions
 recommendations: false
-ms.date: 01/19/2022
+ms.date: 02/11/2022
 ---
 
 # Compare Azure Government and global Azure
@@ -75,6 +75,7 @@ Table below lists API endpoints in Azure vs. Azure Government for accessing and
 ||Azure Database for PostgreSQL|postgres.database.azure.com|postgres.database.usgovcloudapi.net||
 ||Azure SQL Database|database.windows.net|database.usgovcloudapi.net||
 |**Identity**|Azure AD|login.microsoftonline.com|login.microsoftonline.us||
+|||certauth.login.microsoftonline.com|certauth.login.microsoftonline.us||
 |**Integration**|Service Bus|servicebus.windows.net|servicebus.usgovcloudapi.net||
 |**Internet of Things**|Azure IoT Hub|azure-devices.net|azure-devices.us||
 ||Azure Maps|atlas.microsoft.com|atlas.azure.us||