To achieve operational excellence in today's IT platform continuous to become even more difficult. The security of the data amongst which suffers the most or can say is very vulnerable to the attacks. Also the storage space of the particular data these days also is becoming the major issue in current scenario. So to maintain the Integrity of the data or the work of the user need to be made maintain, these days it is seen that the lot of storage in cloud which gives, a chance of using Cloud technology in good way, but also it need to ensure the security in this part. So to maintain the confidentiality of the data in this paper the sharing of files using the cloud technology is useful. Which is done by the proper Authentication of the users as well as the Availability of the stored data at the cloud storage? Also there are many ways to improve the security in the inter-cloud to achieve the secured sharing and to maintain the identity of the data of different users at one single place.

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Authentication Availability Cloud Computing Confidentiality Identity Integrity Management.