Security Assertion Markup Language 2.0 (SAML 2.0) is a standard providing means to exchange authentication and authorization data between security domains. It is typically used to achieve cross-domain single sign-on (SSO) and creation of security tokens.
Security Assertion Markup Language (saml) is an xml-based open standard for exchanging authentication and authorization data between security domains, that is, between an identity provider (a producer of assertions) and a service provider (a consumer of assertions). saml is a product of the oasis Security Services Technical Committee.
SAML version 2 (saml-2.0) adds digital signatures and resolves back into the SAML standard enhancements made to the SAML 1.1 (saml-1.1) specification by other systems (for instance Shibboleth and WS-federation).
SAML 2.0 is significantly different from SAML 1.1 and is not backwards compatible, although many systems can handle both.
Questions should have this tag when they are specifically related to SAML 2.0, more general SAML questions should have the less specific saml tag instead.
