Single Sign-on (SSO):: It is an authentication process that allow users to access multiple applications with same login credentials of Magento 2. Using this user can enter the login credentials in the third-party application and be logged in to Magento 2 store simultaneously.
“Single sign-on is an authentication method that allows a user to log in with a single ID and password to multiples applications simultaneously”
“Single Credential that enables users to log in to multiple applications and websites”
This allows faster access to applications. The customers can use their existing credentials for logging into various third-party applications such as UVdesk, The user can use one set of credentials for various platforms and won’t have to remember multiple passwords for each login.
Magento 2 using multiple stores, blog etc., by using single User ID / Password, user can enable to login multiple Magento 2 stores & blog