What is Keycloak?
Who uses Keycloak?
Here are some stack decisions, common use cases and reviews by companies and developers who chose Keycloak in their tech stack.
As the access to our global REST-API "Charon" is bound to OAuth2, we use Keycloak inside Quarkus to authenticate and authorize users of our API. It is not possible to perform any un-authenticated requests against this API, so we wanted to make really sure that the authentication/authorization component is absolutely reliable and tested. We found those attributes within Keycloak, so we used it.