The consequence of the evolution to a hybrid WAN is that branch office WAN has evolved dramatically — from merely employing a WAN router 10 years ago to now also including various types of appliances such as firewalls, intrusion prevention, Internet Protocol (IP) VPN concentrators, WAN path controllers and WAN optimization controllers. Increasing adoption of various cloud services, such as on-premise private cloud, public cloud, hosted private cloud and SaaS, in enterprise IT has resulted in a hybrid IT architecture within the enterprise network infrastructure. Enterprises need to meet the demand for agile, cost-effective, reliable and high performing business, networks connecting the hybrid IT environment. Network managers now find branch office network solutions are increasingly complex and inflexible, as well as costly, to deploy and manage. In addition, it is equally complex and difficult to obtain visibility into application performance across the hybrid WAN, and to ensure that applications receive appropriate prioritization and are forwarded over an appropriate WAN path.