Cloud computing requires broad security solutions based upon many aspects of a large and lightly integrated system. The cloud data storage service releases the users from the burden of huge local data storage and their preservation by out- sourcing mass data to the cloud. However, the fact that users no longer have physical possession of the possibly large size of outsourced data makes the data integrity protection in Cloud Computing a very challenging and potentially formidable task, especially for users with constrained computing resources and capabilities. One of the significant concerns that need to be spoken is to assure the customer of the integrity i.e. rightness of his data in the cloud. The data integrity verification is done by introducing third party auditor (TPA) who has privileges to check the integrity of dynamic data in cloud on behalf of cloud client. Cloud client can get notification from TPA when the data integrity is lost. These systems have sustenance data dynamics via the data operation such as data modification, insertion, deletion. Many work has been done but it lacks the support of either public auditability or active data processes To securely introduce an effective third party auditor (TPA), the following two fundamental requirements have to be met: (i) TPA should be able to efficiently audit the cloud data storage without demanding the local copy of data, and introduce no additional on-line burden to the cloud user; (ii) The third party auditing process should bring in no new vulnerabilities towards user data privacy. Here, a proposed scheme is discussed in which gives a proof of data integrity in the cloud which the customer can employ to check the correctness of his data in the cloud. This proof can be agreed upon by both the cloud and the customer and can be incorporated in the Service level agreement (SLA). This scheme ensures that the storage at the client side is minimal which will be beneficial for the organization. In this paper, we define a survey on Cloud computing and provide the architecture for creating C
