MPLS (Multi-Protocol Label Switching) technology is adopted to construct enterprise IP network on the backbone broadband IP network, and to realize cross-region, safe, high-speed and reliable multi-service communication of data, voice and images. Meanwhile, differential services are realized by combining QOS (service quality) technology and traffic engineering technology. Different businesses of enterprises are divided into different service levels before carrying out the enterprise exclusive network communication services.

Based on physical link resources (including but not limited to fixed broadband, 4G, dedicated line, etc.), the service provider constructs end-to-end virtual and encrypted lines through SD-WAN CPE terminal (which is installed and deployed by the user in its network). Based on SD-WAN access service, the user can build flexible point-to-point and point-to-multipoint VPNs.