The fact is that today, enterprises struggle with the cost, complexity, and operational tax associated with managing networks and especially WAN services. The consumer cloud model has been gradually seeping into the enterprise. It’s now normal to buy services such as presentation and communications for the cloud, using service such as Cisco’s Webex, Microsoft’s Lynx or Skype, and GoToWebinar. Enterprise network connectivity. WAN shouldn’t be any different. For this reason, a new category of services, known as Software-defined WAN (SD-WAN), or cloud-delivered WAN, is expected to dominate growth in the market for enterprise communications services over the next decade.