Separation of duties in Keycloak reduces risk by splitting critical permissions across roles. No single account should have full control over identity, access, and policy. This prevents privilege abuse, misconfigurations, and silent security failures.
The principle is simple: break down administrative tasks into discrete functions and assign them to separate users or groups. In Keycloak, this means mapping roles carefully, limiting realm admin rights, and configuring fine-grained permissions. Service accounts that manage users should not also control client configurations. Similarly, roles that assign policies should not own audit or logging functions.
Keycloak’s built-in role-based access control (RBAC) supports this approach. Realm roles can be tailored so that account admins manage users only, client admins manage applications, and security admins maintain policies. Using composite roles allows you to combine only the permissions required for a job without stacking unrelated privileges.