Cloud computing is an emerging economical approach that allows businesses to move beyond creating their own IT teams towards outsourcing their applications, systems, including infrastructure requirements. Cloud technology was already emerged as a framework in addition to the fifth infrastructure services, after water, energy, fuel, and telecommunications. Moreover, the IT sector is undergoing a fundamental transition. Earlier, businesses would maintain existing operations by purchasing IT equipment, but then they are implementing technology on top of that architecture. Cloud computing is a paradigm wherein IT technology is rented as well as utilized as needed by the organization. This paper describes a comprehensive investigation of data confidentiality approaches in cloud technology, their limitations as well as various strategies for overcoming them.

Keywords: Cloud computing, Data confidentiality, Threats, SaaS, PaaS, IaaS.

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