What is Security Assertion Markup Language (SAML) and how does it work?

Security Assertion Markup Language (SAML) is a federated identity standard that enables Identity Providers (IdPs) to exchange authentication and authorization details with Service Providers (SPs) using XML-based protocols, facilitating Single Sign-On (SSO) for enterprise and SaaS applications. SAML 2.0, the latest iteration, improves upon its predecessor SAML 1.1 by introducing features like multiple bindings, single logout, enhanced encryption, and improved SSO profiles, thus allowing users to access multiple applications with a single set of credentials. The SAML protocol involves key components such as SAML Metadata, Protocols, Bindings, Assertions, and Profiles, each playing a vital role in authenticating users and managing access control. SAML requests and responses, which are XML documents, are exchanged between IdPs and SPs to validate user identities and provide necessary user attributes. SAML's ability to streamline authentication processes reduces security risks associated with password management, making it a favorable choice for B2B companies seeking scalable identity solutions. Third-party auth providers like Stytch simplify SAML implementation by offering APIs and SDKs, allowing organizations to focus on deploying secure and efficient authentication systems without the complexity of handling SAML protocols directly.

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