Introduction The market for content delivery networks (CDNs) has flourished as video transport has moved from specialized cable, satellite, or terrestrial networks to the internet. Thanks to successful CDN deployments, carriers have been able to continue to deliver a great customer video experience without the need to massively increase bandwidth in core networks to transport these vast amounts of video traffic. But anticipated video traffic growth means CDN cache deployments need to evolve to push even further out to the edge of the network and to be instantly scalable in order to cost-effectively meet peak bandwidth needs. Communications service providers (CommSPs) are adopting network functions virtualization (NFV) to orchestrate new services using virtual network functions (VN

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