As part of the consulting and advisory work we do at both Wiretap Ventures and SDxCentral, we work closely with enterprises and service providers on their software-defined networking (SDN) and network functions virtualization (NFV) initiatives. Network virtualization, regardless of whether you deem it part of SDN or not, is certainly one of the more common projects that our clients look for assistance on, usually in the context of building or improving a private cloud deployment.