Race to Virtualization Set to Intensify
Data centers have evolved from owned physical entities to potentially outsourced, virtualized, and geographically distributed infrastructures. Virtualization involves the use of an encapsulating software layer—hypervisor or virtual machine monitor (VMM)—that surrounds or underlies an operating system and provides the same inputs, outputs, and behavior that would be expected from an actual physical device. Today, the data center has reached a tipping point. Over the years, complexity has crept into the network in an attempt to accommodate the growth of applications; now a solution is needed to tackle scalability issues of large-scale cloud deployments.
Software-defined networking (SDN) and network functions virtualization (NFV) are complementary approaches that offer a new way to design, deploy, and manage the network and its services. NFV decouples network functions such as network address translation (NAT), firewalling, intrusio...
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