A Meta-Synthesis Approach for Cloud Service Provider Selection Based on SecSLA

The Service Level Agreement(SLA) of current cloud computing often focuses on performance while seldom emphasizes security; additionally, customers have to select the most suitable one among several Cloud Service Providers (CSPs). Therefore, a cloud-oriented meta-synthesis selection method is proposed as well as a cloud computing security SLA indicators system by using Delphi and Goal-Question-Metric approaches; synthetic weight for each indicator is granted through G1 and coefficient of variation methods; optimum nearness is defined to provide quantitative basis in the CSP selection. Calculation and analysis against the normalized reports from Cloud Security Alliance's Security, Trust & Assurance Registry (CSA STAR) show that the proposed approach has the features of clear process and relatively high distinguishability.