Implementing Role-Based Access Control (RBAC) in Angular applications can enhance security by controlling access to different parts of the application based on user roles, such as admin, editor, or viewer. This process involves defining roles and permissions, setting up backend authorization with an API, and implementing client-side checks for conditional rendering. The article outlines using Permit.io, an authorization-as-a-service solution, and CASL, a library for client-side permission enforcement, to achieve this. The setup includes initializing the Permit SDK, configuring CASL in Angular, and ensuring that backend checks complement frontend security due to the potential for HTTP request manipulation. The integration of CASL's Ability class supports dynamic permission checks, and the article emphasizes that externalizing authorization through services like Permit.io can simplify management, enhance security, and allow developers to focus on core business logic. The approach provides a scalable and maintainable RBAC system, crucial as applications grow and security requirements evolve.