Single sign-on (SSO) is a user authentication process that allows individuals to access multiple applications with one account, but the term can vary in meaning depending on context. For consumer applications, SSO often refers to social logins like "Sign in with Google," while in enterprise environments, it involves using an employer-provided account to access various company-specific applications. Enterprise SSO connects users to their company's tenant within a product rather than just providing access to the product itself, requiring organizations to establish unique connections for each application. This setup typically involves identity providers (IDPs) such as Google Workspace, Okta, or Azure AD, and is commonly implemented using the SAML protocol. SAML facilitates the authentication process by redirecting users to their work account for login, while SCIM (System for Cross-domain Identity Management) complements SAML by synchronizing user data and automating the deactivation of accounts for employees who have left the company. PropelAuth provides guidance for setting up SAML and SCIM, addressing potential complexities in the process and ensuring seamless integration and management of user access across different platforms.