Definition
Single Sign-On (SSO) is an authentication mechanism whereby a single login grants the user access to multiple applications and services without the need to log in again. SSO is typically implemented via SAMLSecurity Assertion Markup Language - XML-based protocol for identity federation and SSO between systems., OAuth 2.0Industry standard for delegated authorisation - allows users to grant third-party applications controlled access without sharing passwords. or OpenID Connect. In enterprise environments, Microsoft Entra IDMicrosoft's cloud-based identity and access management platform - formerly known as Azure Active Directory (Azure AD). (AzureMicrosoft's cloud platform - strong in the enterprise segment, especially where Office 365 and Active Directory are already in use. AD) or Google WorkspaceGoogle's suite of productivity tools - Gmail, Docs, Drive, Meet and more. is commonly used as the SSO provider.