Claims-based-identity + oauth 2.0

Problem Statement

1. User wants to access an application in an enterprise with authentication.
2. Single-Sign-In. Login to one application. Automatically logged into others. For Eg. login to chrome. you will be logged into gmail, google+, google drive etc. No Need to enter credentials again.
3. Applications supporting — Login with Gmail, Login with Facebook etc.
4. one application getting access to user information provided by another application. (get friends list, contacts list etc)

Algorithm

Claim Based Identity + oauth 2.0

References:

Claims-based Identity for Windows: The Big Picture | Pluralsight