When a user authenticates to an application, a custom claims provider can be used to add claims into the token. A custom claims provider is made up of a custom authentication extension that calls an external REST API, to fetch claims from external systems. A custom claims provider can be assigned to one or many applications in your directory. Please join this webinar to learn more about Microsoft Entra ID Custom Claims Provider.
Download slide deck: https://nzpowerlunchfiles.blob.core.windows.net/data/entra-custom-claim-prov-2025-01-31.pdf