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Cloud Computing:Concept and Platform

Wu Jiyi1,2,Ping Lingdi1,Pan Xuezeng1,Li Zhuo1(1.School of Computer Science and Technology,Zhejiang University,Hangzhou 310027,China;2.Key Lab of E-Business and Information Security,Hangzhou 310036,China)  
As a model of supercomputing based on virtualization,cloud computing provided the IaaS、PaaS、SaaS services via Internet,which will integrate all the large-scale and extensible distributed computing resources such as computing、storage、data and application for cooperative work.It's an entirely new Internet application mode and will be the leading way to access services and information in the near future.With consideration of the status of mixed concepts,a reference definition was put forward after the introduction of the cloud computing basic concept,and then its difference with distributed computing,grid computing,parallel computing and utility computing were analyzed.In the end,the case of mainstream cloud computing platforms were introduced in helping to profound understand what's the cloud computing form platform view.
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