"Providers are scrambling to top each other in the wildly evolving software-defined WAN (wide-area network) space, because so much innovation has emanated from the sector.
It's difficult to find another sector of the enterprise IT industry that has seen faster growth than software-defined WAN (wide-area network). Analysts with IDC predict the SD-WAN market to grow 40.4 percent a year from 2017 to 2022, when it will reach $4.5 billion. Dell'Oro Group analysts said the growth rate will hit 35 percent a year over five years. Zeus Kerravala, principal analyst with ZK Research, has said that the WAN has been a problem for businesses for years, and that SD-WAN technologies hold the promise of alleviating some of the pain..."