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

Navigating the complexities of modern authorization, the text explores the limitations of Role-Based Access Control (RBAC) and the advantages of Relationship-Based Access Control (ReBAC) in managing permissions, especially for hierarchical structures. While RBAC is straightforward and efficient for simple setups, it often leads to "role explosion" when applied to complex environments like B2B SaaS, where roles multiply uncontrollably. ReBAC, on the other hand, offers a scalable solution by focusing on the relationships between users and resources, making it ideal for intricate systems like file hierarchies or organizational charts. The text also touches on Attribute-Based Access Control (ABAC) as a flexible, albeit complex, alternative, and emphasizes the importance of using policy engines like Open Policy Agent for effective implementation. To future-proof identity strategies, tools like ssojet are recommended for their ability to manage complex permissions across different enterprise environments, ensuring adaptability to evolving business needs without constant overhauls.