What is Single Sign-on
Single sign-on (SSO) is a session/user authentication process that permits a user to enter one name and password in order to access multiple applications. The process authenticates the user for all the applications they have been given rights to and eliminates further prompts when they switch applications during a particular session.
Most of the applications have their own mechanism for authentication which uses different user-id’s and password. Single Sign-On internally translates and stores credentials of each application the user has access to.