Single Sign-On (SSO) is an authentication method that allows users to access multiple applications and services with one set of credentials. When a user logs in with SSO, they are granted access to a range of services without needing to re-enter their credentials for each application. SSO typically works by authenticating the user against a central identity provider, which then provides tokens or assertions to service providers to confirm the user's identity and access rights. This approach enhances user experience by reducing password fatigue, improves security by enabling stronger authentication methods for the single login, and simplifies user management for IT departments. SSO is commonly implemented using protocols like SAML, OAuth, and OpenID Connect.
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