44. How does Power Apps secure data from external sources?

Power Apps does not store or manage user credentials for external systems. Instead, it uses the identity of the currently logged-in user to access data.

When a user opens a Power App, their identity is first verified by Microsoft Entra ID. After that, any request made by the app to an external data source (like SharePoint, SQL, or Dataverse) is executed in the context of that user.

For example, if a Power App is connected to SharePoint:

• User logs in → Entra ID verifies identity
• Power Apps sends request to SharePoint
• SharePoint checks that user’s permissions
• User only sees the data they are allowed to access

Key Learning:

Power Apps acts as a bridge, but data security is enforced by the data source using the user’s identity.