An Assertion Consumer Service (or ACS) is SAML terminology for the location at a ServiceProvider that accepts <samlp:Response> messages (or SAML artifacts) for the purpose of establishing a session based on an assertion.

What is ACS URL in IdP?

The Assertion Consumer Service (ACS) URL directs your IdP where to send its SAML Response after authenticating a user. We will receive your IdP’s SAML Response at the ACS URL, verify the Response, and log the user into Greenhouse Recruiting.

Is ACS URL the same as SSO URL?

Single Sign On URL: the endpoint that is dedicated to handling SAML transactions. In the Okta SAML template setup screen, the SSO URL refers to the service provider’s ACS.