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Cloud computing is a new computing model that involves outsourcing of computer technologies due to the lack of their availability in certain locations. However, when there is no previous experience between cloud service providers and their consumers, consumers often hold a degree of uncertainty about the reliability, quality and performance of the services being offered. This paper presents a survey about the current trust management techniques regarding to the performance of cloud service providers taking into consideration other aspects like privacy, security, credibility, user feedback, etc.

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