Proceedings of the 4th International Workshop on Architectures, Concepts and Technologies for Service Oriented Computing

July 23-23, 2010, in University of Piraeus, Greece

ISBN: 978-989-8425-20-1

Conference Link: http://www.icsoft.org/ACT4SOC.htm

Foreword: This volume contains the proceedings of the Fourth International Workshop on Architectures, Concepts and Technologies for Service Oriented Computing (ACT4SOC 2010), held on July 23 in Athens, Greece, in conjunction with the Fourth International Conference on Software and Data Technologies (ICSOFT 2010). Service-Oriented Computing (SOC) has emerged as a new computing paradigm for designing, building and using software applications to support business processes in heterogeneous, distributed and continuously changing environments. The architectural foundation for SOC is provided by the Service-Oriented Architecture (SOA), which states that applications expose their functionality as services in a uniform and technology-independent way such that they can be discovered and invoked over the network. Claimed benefits of SOC include cheaper and faster development of business applications through repeated aggregation of services, better reuse of software artifacts and legacy applications through service wrappings, and easier adaptation to changes in the business environment through replacement and reconfiguration of services. In order to realize these benefits routinely with SOC, for realistic business settings with complex IT environments, many challenges still need to be addressed. For example, supporting business processes and collaborations in an open service-oriented world requires a better understanding of integration problems along different dimensions. First of all, alignment between business demands and application functions has to be achieved. This requirement for vertical integration should drive the aggregation of services, from basic IT services to rich business services, to achieve the desired or given business processes. Secondly, horizontal integration has to be considered if business collaborations span multiple organizations. In such cases, interoperability between the services has to be ensured at different levels (syntactic, semantic and pragmatic) and on different aspects (information and behavior). Thirdly, we have to assume that business demands as well as IT capabilities will change over time. This evolution will impact existing solutions, and thus require the adaptation, management and maintenance (e.g., versioning, replacing, updating) of services and service compositions. Moreover, changes that occur at one level or on one aspect have to be propagated to other levels and aspects in order to keep the consistency of the integration solution. And finally, all of the above challenges not only exist at design-time, but at run-time as well. Service composition may be on-demand, driven by an end-user service creation activity, and running instances of composite services are subject to changes concerning, for instance, the availability of resources. This implies that service level agreements and associated quality-of-service need to be negotiated, monitored, and controlled in multi-party and heterogeneous environments. The goal of the workshop is to focus on the fundamental and practical challenges related to SOC, to discuss what theoretical, architectural or technology foundation is needed, and how this foundation can be supported or realized by new or enhanced infrastructures, standards and/or technologies. The workshop aims at contributing to the dissemination of research results, establishment of a better understanding, and identification of new challenges related to SOC/SOA, by bringing together interested academic and industrial researchers. This year 10 papers out of 30 submissions were selected, based on a thorough review process, in which each paper was reviewed by at least 3 experts in the field. Due to the number of reviews and the professionalism of the authors, program committee members and reviewers, we are confident that all selected papers are of high quality. The selected papers are also a good illustration of the different challenges mentioned above. They have been grouped in four presentation sessions during the workshop, named "SOA applications – logistics and online advertising", "Design and analysis of service-oriented systems", "Web services composition" and "SOA applications – homecare and emergency support". We like to take this opportunity to express my gratitude to all people who contributed to ACT4SOC 2010. Our thanks go to the authors, who provided the main content for this workshop, and to the program committee members and additional reviewers, who provided constructive comments that contributed to the quality of the content. We also like to thank the ICSOFT secretariat, especially Mónica Saramago and Vitor Pedrosa, for the excellent organizational support. Finally, we appreciate the opportunity given by the ICSOFT co-chairs, José Cordeiro and Maria Virvou, to allow the organization of this workshop in conjunction with ICSOFT 2010. We wish all presenters and attendees an interesting and productive workshop, and a pleasant stay in the historical city of Athens. (More)


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