Cloud computing is Internet-based computing that represents a new model for the supply, consumption and delivery of IT services. It typically involves over-the-Internet provision of dynamically scalable and often virtualized resources. Similar to an electricity grid, resources are shared, and software and other information are available to computers and other devices on demand.
There are other ways to define cloud computing, as well. It can be defined as computing with virtual servers that can be made available to any resource outside the firewall. Outsourcing could be considered another abstraction of cloud computing: the work is done external to the organization, and we’re not always aware of the exact location where the work is performed.
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