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Infrastructure-As-A-Service [IaaS]

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A type of cloud computing service where the provider offers the customer the ability to craft virtual networks within their computing environment. An IaaS solution enables a customer to select which operating systems to install into virtual machines/nodes as well as the structure of the network including use of virtual switches, routers and firewalls. It also provides complete freedom as to the software or custom code run on the virtual machines. An IaaS solution is the most flexible of all the cloud computing services; it allows for significant reduction in hardware by the customer in their own local facility. It is the most expensive form of cloud computing service.