Zuul Zero Trust AAA provides cross-vendor least-privilege Identity and Access Management (IAM) capabilities designed for both servers and people, managing and controlling authorized connections for each device type and network service. It utilizes certificate-based authentication where possible, complements micro-segmentation strategies, and provides multi-factor authentication (MFA) that works offline. The solution also supports vendor-agnostic role-based access control (RBAC) for service technicians, ensuring secure access across diverse environments.