Active Directory Federation Services (AD FS), a software component developed by Microsoft, can run on Windows Server operating systems to provide users with single sign - on access to systems and applications located across organizational boundaries. It uses a claims - based access - control authorization model to maintain application security and to implement federated identity. Claims - based authentication involves authenticating a user based on a set of claims about that user 's identity contained in a trusted token. Such a token is often issued and signed by an entity that is able to authenticate the user by other means, and that is trusted by the entity doing the claims - based authentication. It is part of the Active Directory Services.
what is the use of active directory federation services
to provide users with single sign - on access to systems and applications located across organizational boundaries