Role-Based Access Control (RBAC) is an effective approach to managing user permissions by assigning roles with specific access rights, simplifying complex access management tasks. This article outlines the creation of a Q&A platform using Next.js and Neon, emphasizing the implementation of authentication and RBAC with Clerk. It explains RBAC as a security method that restricts user interactions based on their roles, promoting the principle of least privilege to ensure users access only necessary resources. The guide illustrates the development of a platform, detailing the roles of Viewer, Contributor, Moderator, and Admin, each with distinct permissions. It discusses setting up the platform's frontend and backend components, integrating Clerk for authentication, and managing user roles directly from the application. The tutorial further demonstrates the integration of a Neon Postgres database using Drizzle ORM for data management, ensuring a secure and scalable application. By following the steps, developers can implement RBAC to build secure applications with user-specific access levels.