Enhancement of Cloud Security and Strength of Service Using Trust Model

Cloud Computing involves delivering hosted services over the internet. These services are broadly classified into three categories: Software-as-a-service (SaaS), Platform-as-a-Service (PaaS), Infrastructure-as-a-Service (IaaS). The abstracted power of hardware and software accessed over the Internet, created and disposed off efficiently, are dynamically scalable through a variety based on measurable usage. This paper deals with the classification of cloud layers and measures trust value for cloud service providers using fuzzy logic centroid method of defuzzification. We have used three parameters, reliability, availability and turn-around time for evaluating trust. With this trust value, the strength and security of cloud service are enhanced as compared to that in Trust Model for Measuring Security Strength of Cloud Computing Service [5]. The advantage of using this model is that it is more convenient and the trust is evaluated using lesser parameters.