As businesses hurtle headlong into the world of cloud computing they are trying to accelerate their IT deployments in order to move faster than the other guy. In this world, virtualization—a mainstay in the storage and computing areas—finally makes it to networking through technologies like Software Defined Networking (SDN) and Network Function Virtualization (NFV). SDN gets all of the headlines and attention, because it is happening inside the datacenter; companies are investigating SDN for their own networks. NFV is much quieter in the market, but that is not stopping companies like AT&T, Brocade Communications Systems, Cisco Systems, Citrix Systems, Dell, F5 Networks, Hewlett-Packard, IBM, Intel, Microsoft, NEC, and Verizon Communications from investing effort into products to fill this market. NFV is carrier-driven, not customer-driven, and these vendors see a nearer term revenue opportunity for NFV.

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