R&E network operators are well aware of the complexities of delivering new services using today’s networks, but wholesale rip and replace is not a realistic option. Because service agility is pivotal to long-term viability, many operators are turning to SDN/NFV to help manage and control physical devices and cloud services. Driven by requirements to lower costs, these operators understand virtualizing network functions is less costly and more scalable than buying additional purpose-built hardware or appliances.