The Agile Controller-WAN, a core component of the Huawei IP WAN solution, enables cloud-based WAN solutions to maximize the value of networks. The Agile Controller-WAN has strong and flexible management capabilities that allow the rapid deployment and provisioning of VPN services on WANs. It can automate the monitoring, planning, and adjustment of network traffic based on set constraints, which improves network resource utilization. In addition, it provides differentiated SLA guarantees, makes network resources manageable and visualized, and greatly increases the efficiency of O&M. The Agile Controller-WAN uses an open architecture to support basic network services and northbound standardization and enables network northbound openness to reduce the difficulty of interconnection. It also provides customers with a ROADS experience.