Single sign-on (SSO) and Security Assertion Markup Language (SAML) are key technologies in managing user authentication and access control for digital services, though they serve different roles within this process. SSO allows users to access multiple applications with a single set of credentials, enhancing user experience and security by reducing the need for multiple passwords. SAML, on the other hand, is an XML-based standard that facilitates secure data exchange between service providers and identity providers, ensuring that user credentials are verified efficiently and securely. While SAML underpins the authentication framework enabling SSO, the two work together to provide seamless and secure access across various platforms. Tools like Descope's SAML-based SSO aim to simplify the integration of these technologies, allowing developers to implement secure, user-friendly authentication solutions with minimal effort.