Cloud Computing

[Gregory]

Cloud computing refers to applications and services offered over the Internet. These services are offered from data centers all over the world, which collectively are referred to as the cloud. This metaphor represents the intangible, yet universal nature of the Internet.
The idea of the cloud simplifies the many network connections and computer systems involved in online services. In fact, many network diagrams use the image of a cloud to represent the Internet. This symbolizes the Internets broad reach, while simplifying its complexity. Any user with an Internet connection can access the cloud and the services it provides. Since these services are often connected, users can share information between multiple systems and with other users.
Examples of cloud computing include online backup services, social networking services, and personal data services such as Apples MobileMe. Cloud computing also includes online applications, such as those offered through Microsoft Online Services. Hardware services, such as redundant servers, mirrored websites, and Internet-based clusters are also examples of cloud computing.

[Gregory]

the use of services, computer programs, etc. that are on the internet rather than ones that you buy and put on your computer