期刊名称：International Journal of Engineering and Computer Science
印刷版ISSN：2319-7242
出版年度：2013
卷号：2
期号：12
页码：3345-3352
出版社：IJECS
摘要：In this paper infrastructure as a service (IaaS), development and runtime platforms as a service (PaaS), and software andbusiness applications as a service (SaaS). Clients not having any resources and data are guaranteed to be available andubiquitously easy to get to by means of Web services and Web APIs “in the Cloud”. In the condition of cloud computing, thisimplies a significant, principle business decision whether to own and preserve a data center or outsource operations to the cloud.In Challenges and the opportunities are bond with the availability or performance of software running in the cloud, as well asprivacy and data control. IT resources that is actually needed; for the service provider, better resource utilization of existinginfrastructure is achieved through a multi-tenant architecture. In This paper suggest in trade-offs among service quality attributes,such as availability, distributed data consistency, service runtime presentation, and privacy in cloud computing
关键词：Trade-offs; PaaS; SaaS; Distributed Systems; Service Quality; Cloud Computing
