This user guide for ExtremeCloud IQ (Classic) version 25.11.0 provides comprehensive technical guidance for deploying, configuring, monitoring, and troubleshooting a cloud-managed networking platform supporting access points, switches, routers, and SD-WAN environments. It details onboarding workflows for real and simulated devices, including Digital Twin simulations, CAPWAP-based provisioning, and cloud or local management models. Configuration coverage includes network policies, SSIDs, VLANs, routing, VPN, QoS, authentication services, and extensive security controls such as WIPS, NAC, firewall policies, SAML-based SSO, and multi-factor authentication. The guide emphasizes monitoring through dashboards, real-time maps, client and device health analytics, logs, alerts, and packet capture, alongside ML-driven insights via CoPilot, anomaly detection, and Network 360 scoring. It also addresses AFC-based 6 GHz deployment with geo-location, regulatory compliance, and fallback behaviors. Troubleshooting sections provide diagnostic utilities and common issue resolution steps. Designed for intermediate to advanced IT administrators, it supports scalable enterprise deployments and integration with external systems.