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The following topics dealt in the 2009 IEEE International Conference on Cloud Computing are related to: service cloud and other cloud applications; DSP re-encryption; deployment of service in a cloud subject to memory and license constraints; application performance isolation in virtualization; optimistic synchronisation of parallel simulation in cloud computing environments; customer centric cloud service model and a case study on commerce as a service; intelligent management of remote facilities through a ubiquitous cloud middleware; resource management system for online virtual cluster provision; SOA´s last mile-connecting smartphones to the service cloud; and satellite data processing on high end compute clusters. On the application and industry track, topics are dealt with; the method and tool of cost analysis for cloud computing; an end-to-end methodology and toolkit for fine granularity SaaS-ization; on technical security issue in cloud computing; etc; etc. On work in progress track, topic are dealt with; policy based event driven services-oriented architecture for cloud services operation and management; a RESTful approach to the management of cloud infrastructure; service oriented architecture for cloud based travel reservation software as a service; etc; etc. The paper also includes the discussion in CS&BI workshop and SQAM workshop.