Virtualization Technology

Virtualization technology is fundamental in enabling the development and operation of cloud computing services. Virtualization technology has evolved quickly; these days, we are not only virtualizing desktops and servers but also networks and even entire data centers.
Discuss the relative advantages and disadvantages of virtualization, particularly as it relates to enterprise networking and cloud computing. Ideally, you will speak from your own professional experience. If you do not have any professional experience related to virtualization technology, then please base your discussion on your own research and be sure to include citations.