The use case describes a user logging into IdentityNow via an external identity provider's login, where information is exchanged via federation. This correctly aligns with the concept of passthrough authentication.
Passthrough authentication often uses protocols like SAML (Security Assertion Markup Language) or OAuth for federation. In this case, the identity provider (IdP) handles the authentication and then passes the necessary authentication tokens or assertions back to SailPoint IdentityNow, granting the user access without directly requiring their password to be stored or authenticated by IdentityNow. This is a typical use case of federation and passthrough authentication.
References:
* SailPoint IdentityNow Documentation on SAML and OAuth Federation.
* SailPoint IdentityNow Federation and Passthrough Authentication Configuration Guides.