GitLab is a comprehensive DevSecOps platform that streamlines the software development lifecycle by integrating tools for version control, continuous integration (CI), continuous delivery (CD), and security. On a Debian 11 server, GitLab offers a robust and flexible solution for managing projects, automating pipelines, and ensuring code quality throughout the development process. With features like vulnerability scanning, static and dynamic code analysis, and security testing, GitLab enables teams to implement security practices from the start. Additionally, it provides centralized user, permission, and access management, easily integrating with other tools and services. It's an ideal platform for both developers and security and operations teams. Installation on Debian 11 is straightforward, providing a stable and secure environment for collaborative projects.