Cloud service providers ranking based on service delivery and consumer experience

摘要

Searching of the appropriate cloud services according to consumers' requirements is becoming a complex task, as the number of cloud service providers (CSPs) that offer similar kind of cloud services increases. Service level agreements (SLAs) are commitments of CSPs to their cloud users, but there are only a few simplistic verification mechanisms which ensure that CSPs are delivering cloud services according to service committed. We propose a CSP ranking model based on service delivery measurements and user experience. To rank and select the appropriate CSPs, an intuitionistic fuzzy group decision making is used, as it can include both measurable and non-measurable factors. It also provides the position of each CSP on the basis of particular SLA parameter which helps cloud users to select the CSP according to their specific requirements.