RBAC best practices aim to ensure that users have just the right level of access to resources. This is achieved by defining clear roles and responsibilities, applying the principle of least privilege (PoLP), using role hierarchies, reviewing and auditing roles regularly, implementing RBAC policies, avoiding over-assigning roles, applying the principle of separation of duties (SoD), and using incremental authentication. By following these best practices, organizations can build a secure, efficient, and scalable access control system that aligns with security needs and business requirements.