On a WLAN, an access controller (AC) serves as the core component to perform unified configuration, scheduling, and control. Ruijie self-developed ACs can be used with access points (APs) and RG-WIS unified management platform to flexibly optimize RF coverage and performance, and implement client authentication and virus attack prevention. These ACs can also conduct cluster management to reduce the workload of device deployment. Additionally, Ruijie ACs support remote intelligent optimization, enabling easy O&M.