“…It could also improve the representation of service provisioning by addressing, e.g., business/market partners from one side, and how their resources can interact (through, e.g., interfaces, outputs, inputs, conditions) from another. USDL (Unified Service Description Language) [24] is a platform-neutral language for service description supported by SAP Research that aims to unify three aspects, namely: business (involving, service provider and other roles), operational aspects (e.g., capabilities, dependences, compositions), and technical aspects (e.g., protocols, and technical interfaces). The language's elements are organized in modules, among which we point out three of them: participants, service, and service level.…”