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Cloud services are an emerging sourcing option for technology users and vendors; however, the definition of cloud computing is unclear. Enterprises need to understand what makes something cloudlike, how this determination will affect the choices they make, and whether the cloud will become a useful model. Cloud is not an architecture or infrastructure, because it is a relationship between the consumers and providers of services. That means that there are many approaches to cloud computing. Although each vendor will not be creating a different cloud, they will all feed services into the one public cloud. SaaS and Infrastructure as a Service (IaaS) vendors will become cloud services.
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