SAML 2.0 - SAML 2.0 Bindings

SAML 2.0 Bindings

The bindings supported by SAML 2.0 are outlined in the Bindings specification (SAMLBind):

• SAML SOAP Binding (based on SOAP 1.1)
• Reverse SOAP (PAOS) Binding
• HTTP Redirect Binding
• HTTP POST Binding
• HTTP Artifact Binding
• SAML URI Binding

For Web Browser SSO, the HTTP Redirect Binding and the HTTP POST Binding are commonly used. For example, the service provider may use HTTP Redirect to send a request while the identity provider uses HTTP POST to transmit the response. This example illustrates that an entity's choice of binding is independent of its partner's choice of binding.