Cloud computing(computer awareness)

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Cloud computing is the provision of dynamically scalable and often virtualised resources as a service over the Internet on a utility basis.^[1][2] Users need not have knowledge of, expertise in, or control over the technology infrastructure in the "cloud" that supports them.^[3] Cloud computing services often provide common business applications online that are accessed from a web browser, while the software and data are stored on the servers.
The term cloud is used as a metaphor for the Internet, based on how the Internet is depicted in computer network diagrams and is an abstraction of the underlying infrastructure it conceals.^[4]
A technical definition is "a computing capability that provides an abstraction between the computing resource and its underlying technical architecture (e.g., servers, storage, networks), enabling convenient, on-demand network access to a shared pool of configurable computing resources that can be rapidly provisioned and released with minimal management effort or service provider interaction."^[5] This definition states that clouds have five essential characteristics: on-demand self-service, broad network access, resource pooling, rapid elasticity, and measured service.