Single Sign-On (SSO)

A mechanism that allows users to authenticate once and then access multiple applications or systems without having to log in again for each one.

With SSO, a user only needs to log in once using their credentials, typically provided by an identity provider, and then they can access all the applications or services that are part of the SSO environment, without having to re-enter their username and password for each one. This can simplify the user experience and reduce the burden on users to remember multiple passwords and manage multiple accounts.

SSO can be implemented using different protocols and technologies, such as Security Assertion Markup Language (SAML), OpenID Connect (OIDC), and OAuth. SAML is a widely-used protocol for implementing SSO in enterprise environments, while OpenID Connect and OAuth are commonly used for consumer-facing applications and services.