<Li> Mainframe computer--Powerful computers used mainly by large organizations for critical applications, typically bulk data processing such as: census; industry and consumer statistics; police and secret intelligence services; enterprise resource planning; and financial transaction processing . </Li> <Li> Utility computing--The "packaging of computing resources, such as computation and storage, as a metered service similar to a traditional public utility, such as electricity ." </Li> <Li> Peer - to - peer--A distributed architecture without the need for central coordination . Participants are both suppliers and consumers of resources (in contrast to the traditional client--server model). </Li> <Li> Cloud sandbox--A live, isolated computer environment in which a program, code or file can run without affecting the application in which it runs . </Li>

Cloud-computing providers offer their services as in aws