What is Active Directory Federation Services
How many times have we had to register different user accounts and had to duplicate our identities over online services? This involves in repeatedly providing our details over and over again to each service we newly want to join. Another scenario would be where an Organization A needs to collaborate with another organization B and provide a service in Organization B to employees of Organization A. In a such a case providing access to employees of organization A to these third party services in the traditional sense would require duplicating all the identity information and creating separate logins at Organization B.