Understanding the concept of cloud computing
The cloud computing is a model of access to computer systems, in which data and applications are hosted on the Internet and centers remote computer, so they can be used from any location that has network connection world. Cloud computing allows consumers and businesses use to manage files and programs without installing them locally on their computers. This technology offers a much more efficient use of resources, such as storage, memory, processing and bandwidth.
The term "cloud" is used as a metaphor for the Internet, and originates in the cloud used to represent Internet network diagrams as an abstraction of the infrastructure it represents.
A simple example of cloud computing is the system of electronic documents and applications Google Docs/Google Apps. For use you do not need to buy or install software or have a server, simply with a broadband connection to use any of its services. The server and management software in the cloud (Internet) and are directly managed by the service provider. In this way, it is much simpler for consumers to enjoy the benefits. In other words, the information technology becomes a service that is consumed in the same way we consume electricity or water.