理由是，Resource Group 存储了元数据，这些元数据也是有地理区域（Azure Regions）的配置。
如果资源组中的资源也是有地理区域的配置，通常来说我们最好把这一堆资源放在一起。
因此，这个题目的解释就很绕了。
貌似 AI 针对这个问题的解释并不是很正确，针对部署的问题，我们是可以跨区部署的，虽然并不建议这么去做。
A resource group is a logical container for Azure resources, and it is associated with a single Azure region. While a resource group can contain resources from different services, all resources within that resource group must reside in the same Azure region as the resource group itself.
To deploy your Contoso web application instances to different Azure regions, you would need to:
Create separate resource groups for each region where you want to deploy an instance of your application. For example, you might have ContosoWebApp-EastUS and ContosoWebApp-WestEurope.
Deploy the relevant resources (e.g., App Service plans, App Services, databases, storage accounts) for each application instance into its respective regional resource group.
This approach ensures that all resources within a given resource group are physically located in the same region, which is a fundamental design principle of Azure resource groups.
Would you like me to elaborate on how you might structure these resource groups or provide an example of a multi-region deployment architecture? Here’s an image that illustrates the concept of separate resource groups for different regions:
