What are two parts of a Single Sign-on message flow?

the Single Sign-on message flow consists of two parts: first, the Identity Service (IdS) detects whether the user has a valid access token, and if not, the Identity Provider (IdP) provides a login page for authenticating the user. Once the user is authenticated, the browser issues a PUT of the Finesse desktop with an access token.

In a Single Sign-on (SSO) message flow for Cisco's contact center solutions, two key parts include:B.IdS (Identity Service) detects the user has a valid access token:When a user attempts to access a service, the Identity Service checks if the user's access token is valid, indicating they are already authenticated.D.IdP (Identity Provider) provides a login page for authenticating the user:If the user does not have a valid access token, the Identity Provider will present a login page where the user can authenticate themselves.References:Cisco's documentation on SSO implementation in contact center environments details the SSO message flow, including the roles of Identity Services and Identity Providers in authenticating users.