Role-Based Access Control (RBAC) is an approach to restricting system access to authorized users based on their roles within an organization. It depends on the job functions that individual users have as part of their responsibilities and is designed to reduce administrative work by assigning roles based on job competency, authority, and responsibility. Reference: Cisco Cybersecurity Operations Fundamentals, Module 1: Security Concepts, Lesson 1.2: Data Protection, Topic 1.2.2: Access Control Models