Why are Reputation Systems Absent from Cloud Services: Reason and Solution

摘要

Feedback rating-based reputation system is usually considered as an effective approach to build the trust between cloud users and cloud providers. However, unfortunately, such a reputation system is absent from the present major cloud providers, e.g., Amazon, Google and Microsoft, which embarrasses a cloud user from selecting a trusted cloud service from a cloud provider. In view of this challenge, in this paper, we first analyze the cloud characteristics, and study why reputation systems are absent from cloud providers, from perspectives of cloud provider and cloud user respectively. Afterwards, two reputation systems of popular e-Commerce service platforms, i.e., Amazon.com and eBay.com, are investigated respectively. Finally, a reputation system tailored to cloud services, i.e., Cloud Reputation System (CRS) is brought forth. CRS not only considers the advantages of e-Commerce reputation systems, but also adapts to the cloud characteristics. We believe that the proposed CRS is helpful, for building the trust between cloud users and cloud providers in the future.