This image shows two users, John Smith "A" and John Smith "B", and two realms, an OCI Public Realm and an EU Sovereign Cloud realm. Each realm contains a tenancy, which themselves contain a user base, each with the id john.smith. An arrow indicates that John Smith "A", authenticated via unique credentials, can access the user base in the OCI Public Realm but has no valid credentials to access the user base in the EU Sovereign Cloud realm. John Smith "B", authenticated via unique credentials, can access the user base in the EU Sovereign Cloud realm.