Since the distributed storage administrations are getting more renowned as a result of their preferences, so as to give worldwide access to the information which is display on the cloud, a supplier called "Cloud Service Provider (CSP)" keeps up various imitations for every bit of information on distributed servers. The significant issue of utilizing this replication system as a part of mists is that it is extremely lavish to accomplish solid consistency. Subsequently, to conquer this circumstance we first present a model consistency as a Service (CaaS), which comprises of an extensive information cloud and various review mists. In this model, an information cloud is kept up by a CSP, and a gathering of clients who makes up a review cloud can check whether the information cloud gives the expected level of consistency or not. Additionally we have proposed a two-level examining building design, which just needs an inexactly synchronized check in the review cloud. At last, we define a Heuristic Auditing Strategy (HAS) to uncover however many infringement as could be expected under the circumstances. HAS can be approved by genuine cloud organizations.

Consistency as a Service (CaaS) two-level Auditing Structure heuristic Auditing Strategy (HAS) and Cloud Storage.