Role-Based Access Control (RBAC) is a widely adopted method for managing user access to computer resources. It assigns permissions to specific roles rather than to individual users, allowing for a more scalable and manageable way to control access. In RBAC, a user's role defines what resources they can access and what actions they can perform on those resources. This model improves security by ensuring that users only have access to the information necessary for their role, thereby minimizing the risk of unauthorized access to sensitive data.