%0 Book Section %A De Nicola, Rocco %A Margheri, Andrea %A Tiezzi, Francesco %B Trustworthy Global Computing %D 2012 %F eprints:1578 %I Springer %K Global computing, Orchestration, Coordination, Tuple- based languages, Formal methods, Software tools - Proceedings of 6th International Symposium on Trustworthy Global Computing (TGC) %N 7173 %P 160-178 %S Lecture Notes in Computer Science %T Orchestrating Tuple-based Languages %U http://eprints.imtlucca.it/1578/ %X The World Wide Web can be thought of as a global computing architecture supporting the deployment of distributed networked applications. Currently, such applications can be programmed by resorting mainly to two distinct paradigms: one devised for orchestrating distributed services, and the other designed for coordinating distributed (possibly mobile) agents. In this paper, the issue of designing a pro- gramming language aiming at reconciling orchestration and coordination is investigated. Taking as starting point the orchestration calculus Orc and the tuple-based coordination language Klaim, a new formalism is introduced combining concepts and primitives of the original calculi. To demonstrate feasibility and effectiveness of the proposed approach, a prototype implementation of the new formalism is described and it is then used to tackle a case study dealing with a simplified but realistic electronic marketplace, where a number of on-line stores allow client applications to access information about their goods and to place orders.