Keycloak has a couple of things than can go wrong with multi tenancy especially if you consider using one keycloak realm for each customer after 100 realms keyc

Keycloak has a couple of things than can go wrong with multi tenancy especially if you consider using one keycloak realm for each customer after 100 realms keycloak can just become unresponsive and the tokens from the master admin realm become to big. (https://issues.redhat.com/browse/KEYCLOAK-4593 https://issues.redhat.com/browse/KEYCLOAK-4593)