The origin of the term 'cloud computing appears to be derived from the practice of using drawings of stylized clouds to denote networks in diagrams of computing and communications systems. The word cloud is used as a metaphor for the internet, based on the standardized use of a cloud-like shape to denote a network.
Cloud computing helps the firms to upload all its data on to a cloud and then it can be used it remotely wherever it is required.
By 2016, Gartner-a consultancy firm, expects all Forbes' Global 2000 companies to use public cloud services, transforming much of the current IT hardware, software and database markets into infinitely flexible utilities.