Massively scaled Software as a Service

Explanation

This is possible because the provider can optimize all data center components including the hardware, communications, and software to support just one or two types of workloads.

Environments such as Facebook, eBay, Skype, Google Apps, and others are all designed for massive scaling. You may not think of many of these Web sites as being software applications at all. Nevertheless, all are used directly by businesses, for business purposes. For example, some companies use the social networking site Facebook as a free intranet for their employees. Online auctioneer eBay is the basis of more than 500,000 small businesses, Skype (free online calls and video) is used by small businesses the world over, and Google Apps (messaging and collaboration tools) has over a million different businesses enrolled.