QoS monitoring and dynamic trust establishment in the cloud

Abstract

In the current cloud computing scenario, the need for establishing an SLA is essential. There is an even stronger necessity for monitoring whether the QoS mentioned in the SLA is met by the service provider. The next big issue is the trust on the service provider. Even though the providers pledge to meet the agreed upon QoS, there is a desideratum for a trust model which will give a quantitative measure of the trust to the requester before choosing a service provider. In this paper, we portray a novel approach which will monitor the QoS, negating the drawbacks associated with the existing techniques. The amount of monitoring data sent over the network is reduced by employing a derived and state monitoring approach. Based on the monitoring results, trust is established dynamically by making use of the Markov Chain model. The proposed approach is implemented using a web based system which will elucidate its use in real time. We believe that our dynamic trust establishment technique will be munificent in supporting the way trust management will be viewed in future. © 2012 Springer-Verlag.