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
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Other Cloud Services   Cloud computing is a huge industry these days ...

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