Technical and Semantic Interoperability in the Cloud Broker

Cloud Computing represents an evolution of information systems. This technology is suitable for large groups but also for SMEs that offers a very high computing power at lower costs. It is used to interconnect several organizations disregarding their geographic location, and transforms current computer infrastructures and services. Cloud computing brings a new approach to computing, a different way of using computer resources. This development has given existence to several providers offering multiple services. Then, Cloud end users are faced with the choice of the appropriate provider in terms of supported technologies, security and access rules. Despite the advantages of cloud computing, there are still problems in terms of interoperability, security and confidentiality arrangements between Cloud Service Providers. In this sense, the cloud broker acts as an intermediary between various service providers and users to ensure proper operation. In this paper, we propose a new approach of Cloud Broker’s functional architecture to the Cloud in order to deal with interoperability semantic and technical issue. Indeed, we provide the Cloud Broker of an authentication system based on federated identity that secure and optimize reliable access, this will increase technical interoperability. We also have set up a mechanism for dynamic management of services required by the user, which will increase the semantic aspect of interoperability. Key-Words: Cloud Computing; Interoperability; Cloud Broker; CompatibleOne; Semantic Interoperability ; Technical Interoperability.