Update azure-government.md

Added o3-mini as available including description of USGov DataZone

Author: challenp

articles/ai-services/openai/azure-government.md

@@ -24,10 +24,18 @@ The following sections show model availability by region and deployment type. Mo
 <br>
 
 ## Standard deployment model availability
-|   **Region**  | **gpt-4o**, **2024-05-13** | **gpt-4o-mini**, **2024-07-18** | **gpt-4**, **1106-Preview** | **gpt-35-turbo**, **0125** | **gpt-35-turbo**, **1106** | **text-embedding-3-large**, **1** | **text-embedding-ada-002**, **2** |
-|:--------------|:--------------------------:|:-------------------------------:|:---------------------------:|:--------------------------:|:--------------------------:|:---------------------------------:|:---------------------------------:|
-| usgovarizona  | ✅ | ✅ | ✅ | ✅ | -  | ✅ | ✅ |
-| usgovvirginia | ✅ | -  | ✅ | ✅ | ✅ |  - | ✅ |
+|   **Region**  | **o3-mini USGov DataZone** | **gpt-4o**, **2024-05-13** | **gpt-4o-mini**, **2024-07-18** | **gpt-4**, **1106-Preview** | **gpt-35-turbo**, **0125** | **gpt-35-turbo**, **1106** | **text-embedding-3-large**, **1** | **text-embedding-ada-002**, **2** |
+|:--------------|:--------------------------:|:--------------------------:|:-------------------------------:|:---------------------------:|:--------------------------:|:--------------------------:|:---------------------------------:|:---------------------------------:|
+| usgovarizona  | ✅ | ✅ | ✅ | ✅ | ✅ | -  | ✅ | ✅ |
+| usgovvirginia | ✅ | ✅ | -  | ✅ | ✅ | ✅ |  - | ✅ |
+
+* USGov DataZone provides access to the model from both usgovarizona and usgovvirginia.
+* Data stored at rest remains in the designated Azure region of the resource.
+* Data may be processed for inferencing in either of the two Azure Government regions. 
+
+SKU name in code: DataZoneStandard
+
+Data zone standard deployments are available in the same Azure OpenAI resource as all other Azure OpenAI deployment types but allow you to leverage Azure global infrastructure to dynamically route traffic to the data center within the Microsoft defined data zone with the best availability for each request. Data zone standard provides higher default quotas than our Azure geography-based deployment types.
 
 To request quota increases for these models, submit a request at [https://aka.ms/AOAIGovQuota](https://aka.ms/AOAIGovQuota). Note the following maximum quota limits allowed via that form: