Shibboleth is a widely deployed federated identity solution that originated with Internet2. It is based on SAML 2.0.
NDSU is a member of InCommon. Our entityID is https://idp.ndsu.edu/idp/shibboleth
InCommon is the US higher education federation. It's members are educational institutions and the corporations they sponsor. InCommon is a member of eduGAIN, a federation of 60+ national federations like InCommon.
At this point in time, Shibboleth at NDSU is only for use with InCommon service providers. InCommon is the preferred mechanism for authenticating to third parites, with CAS as the backup. The preferred mechanism for entities at NDSU is still CAS.