RBAC vs ReBAC: Comparing Role-Based & Relationship-Based Access Control

This article contrasts RBAC, ReBAC, and ABAC, explaining how role explosion and hierarchical access requirements push modern applications toward relationship-based authorization and attribute-driven policies. It outlines practical implementation steps—selecting a policy engine (e.g., OPA or Zanzibar-like), defining relations and schemas, decoupling authorization checks, and syncing relationship data—and positions SSOJet as an identity orchestration layer to bridge enterprise SAML/OIDC with flexible authorization models for scalable, multi-tenant environments.