I've been using Keycloak for my free Oracle DB. I have the option to use OCI but I don't want my customer (or players, actually) data to be directly stored on Oracle side because they are not that flexible. Other than that I find Keycloak super easy to use with Kubernetes nowadays though it was such a pain in the ass in the past, because the use of EJB and WildFly. Now they switched to Quarkus and you have a much better environment
