In regular life cloud is most vital part. Presently cloud storage are utilization for business reason the cloud is prevalent because of their tremendous measure of preferences the cloud is versatile we can ready to get to the cloud anyplace universally. A cloud service supplier keeps up much duplication and every bit of information is all inclusive circulated on servers. The principle issue of cloud is to handle duplication of information which is too unreasonable to accomplish effective consistency on around the world. .In this paper we demonstrate a novel consistency service model which contain huge volume of datacloud and various review clouds In the Consistency Service model. An data cloud is keep up by Cloud Service Provider (CSP) and the quantity of client (User) constitute gathering and that gathering of client can constitute a review cloud Which can check whether the information cloud gives the legitimate level of consistency or not we recommend the two level auditing structural engineering, two level auditing building design obliges a freely synchronize check in the review cloud. At that point, outline calculations to measure the shared characteristic of infringement measurements, and the esteem's staleness of read measurements. At last, we devise a heuristic auditing strategy (HAS) to uncover however many infringement as could be allowed. Broad investigations were performed utilizing a mix of reenactments and genuine cloud organizations to accept heuristic Auditing Strategy

Pikkili Balanaidu,N.Poorna Chandra Rao,Dr.S.Prem Kumar."Auditing Consistency among Multicloud: Consistency as a Service". International Journal of Computer Engineering In Research Trends (IJCERT) ,ISSN:2349-7084 ,Vol.2, Issue 09,pp.585-588, SEPTEMBER - 2015, URL :https://ijcert.org/ems/ijcert_papers/V2I912.pdf,

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