add sovereign cloud urls

Author: laujan

articles/ai-services/document-intelligence/concept-document-intelligence-studio.md

@@ -19,6 +19,12 @@ monikerRange: '>=doc-intel-3.0.0'
 ::: moniker range="doc-intel-4.0.0"
 [!INCLUDE [preview-version-notice](includes/preview-notice.md)]
 
+> [!IMPORTANT]
+>
+> * There are separate URLs for Document Intelligence Studio sovereign cloud regions.
+> * Azure for US Government (Azure Fairfax cloud): [Document Intelligence Studio](https://formrecognizer.appliedai.azure.us/studio)
+> * Microsoft Azure operated by 21Vianet (Azure in China): [Document Intelligence Studio](https://formrecognizer.appliedai.azure.cn/studio)
+
 **This content applies to:**![checkmark](media/yes-icon.png) **v4.0 (preview)** | **Previous versions:** ![blue-checkmark](media/blue-yes-icon.png) [**v3.1 (GA)**](?view=doc-intel-3.1.0&preserve-view=tru) ![blue-checkmark](media/blue-yes-icon.png) [**v3.0 (GA)**](?view=doc-intel-3.0.0&preserve-view=tru)
 ::: moniker-end
 

articles/ai-services/document-intelligence/faq.yml

@@ -256,6 +256,17 @@ sections:
 
           - Re-create a custom project with the migrated Document Intelligence resource and specify the same storage account.
 
+      - question: |
+         Are there separate URL endpoints for Document Intelligence sovereign cloud regions?
+        answer: |
+
+          Yes. Document Intelligence Studio has separate URL endpoints for sovereign cloud regions. For example,
+
+          - "Here is the URL for the Azure US Government cloud (Azure Fairfax): [Document Intelligence Studio US Government](https://formrecognizer.appliedai.azure.us/studio)".
+
+          - "Here is the URL Microsoft Azure operated by 21Vianet (Azure in China): [Document Intelligence Studio China](https://formrecognizer.appliedai.azure.cn/studio)".
+
+
   - name: App development
     questions:
       - question: |