As you know, to obtain a SAML2 response from an instance of Shib IdP 2.4, four round trips are required. [1] I'd like to do the same analysis for Shib IdP 3.0. Is the protocol exchange for IdP V3 identical to that of IdP 2.4? If not, can someone point me to an instance of Shib IdP 3.0 on the network? Thanks, Tom [1] https://spaces.internet2.edu/x/8QKRAg