Your app is deployed in the region that hosts the environment. For example, if your environment is created in the Europe region, then your app is deployed in Europe data centers.
If you're an administrator, you can determine the region of each environment in the PowerApps admin center.
Go to the admin center, and sign in with your work account.
In the admin center, all existing environments are listed on the Environments tab. This list shows the Region where your app is deployed:
Environments can be created in different regions, and are bound to that geographic location. When you create an app in an environment, that app is deployed in datacenters in that geographic location. This applies to any items you create in that environment, including databases in the Common Data Service, apps, connections, gateways, and custom connectors.
For optimal performance, if your users are in Europe, create and use the environment in the Europe region. If your users are in the United States, create and use the environment in the U.S.
Note: On-premises data gateways aren't available in the India region or in custom environments. You must create gateways in the default environment.