An overview of cloud interoperability

Unlike the network TCP/IP's and OSI's layered structure of protocols, which allows the independence of protocols of different layers, as well as defining the upper layer protocols through the protocols of the lower layers, the cloud service layers are tightly dependent on each other. For example, an application of the SaaS layer can neither communicate nor exchange data with another application found on the same layer. The goal of this paper is to overview the cloud interoperability and to analyze it as a service model perspective. Several aspects and categories of cloud interoperability are analyzed in this paper.