Thank you for your answer. Yeah, I encountered the same problem. When you want to start to work on a new project you do not want to waste time on authentication

Thank you for your answer. Yeah, I encountered the same problem. When you want to start to work on a new project you do not want to waste time on authentication and authorization. Thanks for the links, you provided. I will take a look at closer look at Keycloak. Yeah, the problem with having 100 different user information and not one standardized way, is a big problem, do you think Auth0 and Keycloak(if they normalize) solve this problem in the best possible way? Passwordless logins and 2FA are a good thing to point out. I will take a closer look at these "problems"/"solutions".