Single Sign-On, commonly known as SSO, is an authentication process that enables users to access multiple applications using a single set of login credentials.
When a user first logs into an SSO-enabled application, the SSO server authenticates their credentials (usually a username and password). Upon successful authentication, the SSO server issues a token. When the user then attempts to access a second application, this token is used to verify their identity, so they don't have to log in again. This token-based system allows seamless transitions between connected applications during the user's session.
While SSO offers many advantages, organizations need to implement it securely. It's essential to keep in mind that while it simplifies the user's experience, it also presents a single point of access to multiple systems. Thus, securing this access point is crucial.
For more information on Single Sign-On (SSO) and its applications, visit Wikipedia's overview of SSO.