This CLI Administration Guide ExtremeCloud™ Orchestrator (XCO) for version 3.6.0 provides comprehensive instructions for managing the XCO platform using the command line interface. This guide covers the integration of Extreme Fabric Automation (EFA) and Extreme Visibility Manager (XVM) solutions into XCO, offering a unified orchestration experience for IP fabric and visibility management. Key sections include system management, certificate management, tenant service provisioning, BGP peer configuration, and traffic mirroring. The document details procedures for backup and restoration, system health verification, and troubleshooting. It also outlines the architecture of XCO, emphasizing its microservices-based approach and the retention of EFA CLI for backward compatibility. This guide is essential for administrators aiming to efficiently deploy, configure, and maintain the XCO environment.