Cloud computing is, in the simplest terms, the use of a remote location, accessible through the Internet, to store the data and applications used on a computer. We discuss this market in more detail in a post from May 3rd. Today’s market size is the size of the public cloud which is defined by the source as a service that is commercially offered to an “unrestricted marketplace of potential users.”

Geographic reference: World
Year: 2010 and forecast for 2015
Market size: $21.5 and $72.9 billion respectively
Source: Larry Dignan, “IDC: Public Cloud Market Will Hit $72.9 Billion in 2015,” ZDNet, June 20, 2011, available online here.
Original source: IDC