“…cloud computing networks large groups of servers, usually those with low-cost consumer PC technology, with specialized connections to spread data-processing chores across them. This shared IT infrastructure contains large pools of systems that are linked together. Often, virtualization techniques are used to maximize the power of cloud computing.”So more to the point, when you subscribe to web hosting package, you almost never know exactly where your website is hosted. You also don’t know when or how the operating systems are patched, when hardware failures occur, etc… All of these things are abstracted so that you don’t have to worry about them. Starting to run short on space? You don’t need to go out and buy more equipment, just upgrade your hosting package and everything happens like magic.