Cloud computing can provide the services to the customer without investing an amount for upgrading a resource at the client end, because everything is available in the centralized server called cloud. The security issue is the main drawback of the cloud services which leads to the customer feel uncomfortable. There are different levels of cloud security available in the cloud computing but it not satisfies the cloud customers. The exiting cloud based security concentrates only on the network level. Cloud need application level defense in order to secure the cloud application more effectively. The proposed approach uses the registry with tag which provides security over the application for ensuring the authorization of the services. There are two registry had introduced namely service registry and certification registry.