For an enterprise, configuration and operation of routers, wide area network (WAN) optimizers, and other components, for instance firewalls, is likely to be complicated. Network as a service is a virtual networking business model, where a third-party network as a service provider virtually offers wide area network services to the enterprises, on a payment basis. Customers are individual businesses and enterprises that make payment to the Network as a Service provider on a pay-per-use basis, i.e., buyers pay only for the capacity and resources used. Factors driving the network as a service market are increasing inclination toward cloud technology, while, poor infrastructure development and high installation costs are key factors restraining the network as a service market in underdeveloped and developing economies. The network as a service market has witnessed significant expansion over the last few years and is further expected to expand, due to the increasing usage of bandw...