Role-based access control (RBAC) and relationship-based access control (ReBAC) are two distinct authorization models used to manage user access to applications. RBAC automates authorization by assigning users specific roles based on their job functions, which dictate their permissions within the system. This model is relatively simple to implement and is effective in settings with clear user roles, though it can lead to role bloat in larger organizations. ReBAC, on the other hand, considers complex relationships between users and resources, allowing for more granular and dynamic access control. While ReBAC provides greater customization and security, it requires more resources and expertise to manage effectively. Choosing between RBAC and ReBAC depends on the complexity of the environment and security needs, with some organizations benefiting from a combination of both. Descope offers tools to integrate these access control models into applications, providing flexibility and control over user authorization.