SAML SSO Authentication API

The SAML 2.0 Single Sign-On API enables service providers and identity providers to exchange authentication assertions via XML-signed messages. It supports HTTP Redirect Binding and HTTP POST Binding for AuthnRequest and Response flows, Assertion Consumer Service (ACS) endpoints, Single Logout (SLO), and IdP metadata retrieval as defined by the OASIS SAML 2.0 specification.