Institute of Electrical & Electronic Engineers
Network virtualization is the key to the current and future success of cloud computing. In this paper, the authors explain key reasons for virtualization and briefly explain several of the networking technologies that have been developed recently or are being developed in various standards bodies. In particular, they explain software defined networking, which is the key to network programmability. They also illustrate SDN's applicability with their own research on OpenADN - application delivery in a multi-cloud environment.