SAML 2.0 is an XML-based protocol that uses security tokens containing assertions to pass information about a principal (usually an end user) between a SAML authority, named an Identity Provider, and a SAML consumer, named a Service Provider.
You may also be interested in:
UNIFYTrust
Access Management
UNIFYTrust delivers secure, scalable customer access and identity capabilities for digital services across enterprise and government.