in the article Vouk begins with introduction of cloud computing is a step in the evolution of on-demand information technologies services and product, Vouk explain the key differentiating element of a successful information technology (IT) is its ability to become a true, valuable, and economical contributor to cyber infrastructure. \
Vouk also speak about concept of workflowis represent a series of strucktured activities and computation that arise in information -assisted problem solving
The key Vouk claim in cloud computing is the user because the value of solution depends very much on the view it has of its end-user requirements and user catagories
in closing Vouk says “Cloud” computing builds on decades of research in virtualization, distributed computing, utility computing, and, more recently, networking, web and software services. It implies a service-oriented architecture, reduced information technology overhead for the end-user, great
flexibility, reduced total cost of ownership, on demand services and many other things.
flexibility, reduced total cost of ownership, on demand services and many other things.
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