Ari Banerjee 4/18/2014
SDN and NFV both promise hardware vendor independence, improved operational efficiency, standardized and open interfaces, and the dynamic chaining of network functions to create new services. Both require centralized orchestration and management. NFV's initial focus is on the virtualization of individual network functions, while SDN's focus is on stitching together network topologies in a programmable way. There is no doubt in the minds of the operators that quality of experience (QoE) will be the critical factor in making SDN and NFV initiatives successful and realize their dream of a programmable network.