The white paper by China Mobile Research Institute discusses the importance of software-defined network (SDN) technology in meeting the demands of agile network connectivity, high-quality cloud migration paths, and reduced WAN costs. SD-WAN is a service derived from the application of SDN technology to WAN scenarios, which uses a tunneling technology to construct an overlay virtual network on physical networks such as wireless network, transmission network, and bearer network. The Elastic SD-WAN integrates cloud and network resources to provide enterprise users with new cloud service experience. This is a significant evolution direction of future SD-WAN technology.
