SAML

2 entities:

identity provider

service provider

It is a XML based markup language for security assertions.

It is often used for Single sign-on (SSO) , by defining a common standard for interoperability.

Checkpoint, continue reading: https://en.wikipedia.org/wiki/Security_Assertion_Markup_Language https://en.wikipedia.org/wiki/XML_Schema_(W3C) https://en.wikipedia.org/wiki/XML_Signature