Single Sign-On

Single sign-on (SSO) is a property of access control of multiple related, but independent software systems. With this property a user logs in once and gains access to all systems without being prompted to log in again at each of them. Conversely, single sign-off is the property whereby a single action of signing out terminates access to multiple software systems.As different applications and resources support different authentication mechanisms, single sign-on must internally translate and store credentials for the different mechanisms, from the credential used for initial authentication.
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