Hi Peter, Despite having been superseded by OpenID Connect, I think OpenID 2.0 is still of great importance - especially in the context of an ultra- conservative enterprise landscape. For example, a de facto standard for accounting software in ex-USSR is 1C (think "Russian Navision"). It does support OpenID 2.0 for external authentication, but I'm pretty sure they won't upgrade to OIDC in the next five years or so. Meanwhile, our company is exploring possibilities of adding sophisticated external auth to 1C. That's why I think I'll be implementing OID2 for KeyCloak soon (or at least a subset of it that would be suitable for 1C). If you're interested in collaborating, please let me know. Dmitry perhaps share their experiences with respect to enabling OpenID 2.0 authentication in keycloak, in addition to OIDC and SAML authentication? I am looking for a way to integrate keycloak with Kentico content management, however Kentico offers out of the box support for OpenID 2.0 and WS-Federation only (claims based authentication that is), and their out of the box implementation of ws-fed appears to be lacking compared to OpenID 2.0.