This GUI Administration Guide ExtremeCloud™ Orchestrator version 3.6.0 provides comprehensive instructions for administering the ExtremeCloud Orchestrator (XCO) application. It details the orchestration capabilities for managing Extreme Networks solutions through a graphical user interface (GUI) and application programming interfaces (APIs). The guide covers the integration of Extreme Fabric Automation (EFA) and Extreme Visibility Manager (XVM) into XCO, supporting lifecycle management and visibility across network devices. Key sections include configuring IP fabric networks, deploying and managing fabrics, and tenant management. The guide also addresses the configuration of non-Clos, 3 Stage Clos, and 5 Stage fabric topologies, port channels, VRFs, BGP configurations, and device reboot procedures. Additional chapters focus on network essentials, firmware upgrades, and monitoring with packet broker functions. The user interface, roles, and authentication methods are explained in detail, providing guidance for both system and fabric administrators.