Argo CD offers a powerful user interface that displays the live status of applications and Kubernetes resources, making it an effective tool for both developers and operators. As organizations scale, they must implement proper security controls to manage multi-tenant installations effectively. Argo CD supports isolating applications between teams, allowing for customized access controls through role-based access control (RBAC) policies. These policies define who can access what application and with what permissions, making it possible for developers to have varying levels of access depending on their familiarity with Kubernetes and GitOps. The guide explores different use cases for multi-tenant setups, such as developers having full access to non-production environments but limited access to production, and highlights the importance of defining application projects and roles to organize access efficiently. Additionally, it provides an example of a multi-tenant setup involving developer teams and infrastructure applications, demonstrating how different roles and access levels can be assigned to users to ensure security and proper management. The text emphasizes the need for organizations to tailor Argo CD configurations to their specific requirements while considering best security practices.