Network Function Virtualization (NFV) has the potential to affect significant changes in the way telecom networks are built and operated. It has, in recent times, become a catalyst for major transformational change. Many service providers, telecom equipment manufacturers – all part of an emerging NFV ecosystem – have announced proof of concepts, live trials, and commercial products embracing the NFV vision. Forums such as the ETSI NFV Industry Specification Group and the Open Networking Forum are providing the necessary structures to support its momentum and evolution.