QoS-based Trust Computing Scheme for SLA Guarantee in Cloud Computing System

In cloud services, trust management is more important than ever before in the use of information and communica-tion technologies. Obviously, the cloud service business relies on the fact the service users trust cloud service providers. A user who trusts the cloud service believes that utilizing the service is a positive thing and helps in achieving his/her goals. In general, the question of trust measurement proved to be a difficult one due to the dynamic nature of cloud resources. This paper presents a QoS-based trust computing system for SLA guarantee in cloud computing system. By embedding our trust system into the SLA (Service Level Agreement) architecture, trust management system can prepare the best trustworthy resources for each service request in advance, and allocate the best resources to users. Experimental results show that our trust system converges more rapidly and accurately than do existing approaches, thereby verifying that it can effectively take on trust measurement tasks in cloud computing.

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