Authentication and authorization in Microsoft Entra ID

 Microsoft Entra ID provides authentication and authorization service by supporting modern authentication protocols, such as OAuth 2.0 and OpenID Connect, in a standards-compliant way. You can use open-source libraries such as Microsoft Authentication Library (MSAL) and other standard-compliant libraries with Microsoft Entra ID.

In the employee-portal scenario, you learn that your organization uses Microsoft Entra ID as the Identity provider for authentication and authorization.

In this unit, you learn about authentication, authorization, and how they're supported in Microsoft Entra ID.

Authentication

Authentication refers to the process of establishing and verifying the identity of the end user who is accessing an application.

Microsoft Entra ID uses the OpenID Connect protocol to handle authentication. OpenID Connect allows applications to obtain basic information about the authenticated user and session.

Authorization

Authorization is the process of ensuring that an authenticated user has the permission to perform some operation or access some data.

The OAuth 2.0 protocol is used to provide authorization flows for different application in Microsoft Entra ID.


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