The single logout (SLO) profile enables a user to log out of all participating sites in a federated session nearly simultaneously. The user may log out globally from any site, whether SP or IdP, as determined by respective web applications. The associated IdP federation deployment handles all logout requests and responses for participating sites. If a participating site returns an error, other participating sites may not receive their logout requests. In this scenario, PingFederate returns an error message to the end users.
The logout messages may be transported using any combination of bindings described for SSO (POST, artifact, or redirect). Refer to the diagrams under SAML 2.0 profiles for illustrations of these message flows.
About session cleanup
When an SP receives an SLO request from an IdP, the session creation adapters must handle any session clean-up with respect to the local application.