REQUIREMENT BASED COMPATIBLE COMPOSITION OF VIRTUAL SERVICES FROM MULTIPLE CLOUDS

Cloud is not an upcoming technology anymore. It’s a well - established and booming technology in industry now. Almost every IT or non IT firm now want to get rid of their data centre ’s responsibilities and shifting it to cloud. So they are hiring services from cloud. It may be a single cloud or multiple clouds to give services to the user. This paper provides a framework where user or customer is hiring services from different cloud vendors and we want those services to be compatible to each other as well as to the pre - existing environment of customer along with that it should fulfil the user requirements e. g. minimum deployme nt time, minimum cost and maximum Reliability. This paper also penlights different concerns while hiring services from cloud vendors. As virtualization is a necessary tool while deploying cloud, all services are virtual services from cloud service provider . So, virtualization also plays a vital role while distributing services