For a commoner, Cloud Computing is a model of a service bureau. You do not build or own capital infrastructure or manage operational aspects. Instead, you pay for what you use.
To give an example, it’s like buying a flight ticket instead of buying an airplane and managing the huge expenditure with regard to operation and management. The airline company adopts a service model where the company is responsible to manage expensive assets and to recruit and manage crew while offering services to passengers at a fee that is far below the capital investment and operation costs. Here, a passenger can avail service at a much lower cost compared to the earlier model of having a dedicated aircraft. At the same time, the airline company does profitable business by offering services to a large number of passengers. A win-win situation for both sides.