Network as a Service
With hypervisor-based virtualization, you don’t need to worry about where the virtualized server is physically located—you just want it to serve your data. If a virtual computer is at your location, you call it onsite. If a virtual server is somewhere other than at your location, you call it offsite. Some companies rent virtual servers to others. This is, by definition, Network as a Service (NaaS), a small division of what is called cloud computing. Virtualization didn’t invent the concept of cloud computing, but it made it cheap and practical.
Exam Tip
Other Cloud Services   Cloud computing is a huge industry these days ...

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