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While wireless and mobile topics have been central to any discussion regarding IT strategy for some time, an element that goes hand-in-hand with mobility is the provisioning of a broad range of services in the cloud. Cloud, for the authors' purposes here, refers to any capability that is made available via a network connection, this so as to encompass both public (typically, Web-based) as well as local or private cloud services. The concept of cloud services, often referred to as Software as a Service, or SaaS, is of course very much in keeping with that other key contemporary trend in IT, virtualization (in this context, of services) which today forms the cornerstone of numerous IT strategies.
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