Cloud computing is the use of computing resources (hardware and software) that are delivered as a service over a network (typically the Internet). The name comes from the use of a cloud-shaped symbol as an abstraction for the complex infrastructure it contains in system diagrams. Cloud computing entrusts remote services with a user's data, software and computation.
The idea behind cloud computing is similar: The user can simply use storage, computing power, or specially crafted development environments, without having to worry how these work internally.
Cloud computing is a systems architecture model for Internet-based computing. It is the development and use of computer technology on the Internet. The cloud is a metaphor for the Internet based on how the internet is described in computer network diagrams; which means it is an abstraction hiding the complex infrastructure of the internet.
It is a style of computing in which IT-related capabilities are provided as a service allowing users to access technology-enabled services from the Internet ("in the cloud")] without knowledge of, or control over the technologies behind these servers.
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