Hello group, interesting (relatively new) OpenID Connect / OAuth Server in .Net: https://github.com/IdentityServer/IdentityServer4 Already provides some good documentation - one could borrow some nice explainations from there ;-) (some parts are still a bit sparse at the moment) https://identityserver4.readthedocs.io/en/dev/index.html Such a listing of all supported specs could also be useful for Keycloak docs: https://identityserver4.readthedocs.io/en/dev/intro/specs.html Cheers, Thomas