ECOWS 2010 - The 8th IEEE European Conference on Web Services

Accepted Workshops

Workshop on Service Monitoring, Adaptation, and Beyond (MONA+)
December 1, 2010

Chairs: Raman Kazhamiakin, Dimka Karastoyanova, Andreas Metzger

The advances in modern technology and the constantly evolving requirements implied by dynamic business and operational environments impose new challenges for engineering and provisioning Web Services and Service-Based Applications. Those services and applications have to become drastically more flexible: they should be able to operate and evolve in highly dynamic environments and to adequately identify and react to various changes in these environments. In such a setting, adaptation becomes a key capability of Web Services and Service-based Applications as it enables these services and applications to continuously change themselves in order to satisfy new requirements and demands dictated by the environment. The adaptability relies on the presence of monitoring mechanisms and facilities to identify, detect, and even predict critical events and situations that occur in the environment. A variety of approaches and techniques addressing different forms of monitoring and adaptation have been proposed to date. Still, for delivering robust, dependable, and highly adaptable Web Services and Service-based Applications the definition of more holistic approaches is crucial. This requires the integration of the efforts of researchers from various disciplines and research areas. More specifically, this requires the integration across the different layers of a Service-based Application, including the business layer, the service layer, and the infrastructure layer. In addition, different competences, such as requirements engineering, design, quality assurance, realization, and management need to be brought together to devise those holistic approaches.

MONA+ 2010 aims at bringing together researchers and practitioners from different disciplines with various research backgrounds. The main objective for MONA+ is to discuss highly relevant and pressing research challenges and solutions on monitoring and adaptation of Web Services and Service-based Applications. MONA+ 2010 will be the third workshop in a series of successful workshops.

MONA+ 2010 December 1, 2010 co-located with ECOWS '10
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5th Workshop on Enhanced Web Service Technologies
December 1, 2010

Chairs: Walter Binder, Heiko Schuldt

The Workshop on Enhanced Web Service Technologies (WEWST), collocated with the European Conference on Web Services (ECOWS), is the premier workshop for academic and industrial communities to discuss innovative ideas and research contributions advancing the state-of-the-art in Web service technologies.

WEWST-2010 will be the 5th international workshop in the WEWST series. While the first four editions focused on Web service technology as a newly emerging field, this workshop will address advanced topics on Enhanced Web Service Technologies, thereby acknowledging the maturity of the field.

Although the advantages of Web services to allow businesses to interact with each other while maintaining a loose coupling are well known, there are still many challenges to be solved in this important field of research. The wide variety of tools, techniques, and technological solutions presented in WEWST share one common feature: they suggest new directions for Web service research by introducing new and sometime controversial ideas into the field. The workshop allows participants to gain new insights and to start collaborations by discussing how their own work can be used in related but different areas.

WEWST '10 December 1, 2010 co-located with ECOWS '10
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Workshop on Non-Functional Properties and SLA Management in Service-Oriented Computing (NFPSLAM-SOC'10)
December 1, 2010

Chairs: Flavio de Paoli, Ioan Toma, Marcel Tilly

Service-Oriented Architecture (SOA) is becoming a key aspect for rapidly evolving businesses that require agile system composability and flexibility. As core concepts of any SOA-based system, services have recently received significant interest. They can be used to support Business-to-Business (B2B), Enterprise Application Integration (EAI), and collaborations within or between Virtual Organizations. Like other software components, services expose both functional properties (i.e. what they do) and non-functional properties (i.e. the way they are supplied). Non-functional properties (NFPs) of a system are many and varied, including all properties, which are not directly related to the functionality provided. NFPs include quality of service (QoS) as well as other properties such as cost, adherence to standards and obligations on the consumer/provider. QoS is one of the most important subsets of non-functional properties. Although the term QoS is traditionally used to refer specifically to network performance and reliability characteristics (and methods of guaranteeing these properties) in the context of SOA the term must refer to a wider variety of service properties. This is because there are numerous properties which can be used as indicators of quality (including, e.g. performance, dependability, security, accuracy, customer service, trust, etc.). The term, as applied in SOA, must also refer to properties of system components at different levels of granularity (e.g. network, server, service, operation).

Non-functional properties play an important role in all service related tasks, especially in discovery, selection and substitution of services. It is simple to imagine a scenario in which multiple services which provide the same functionality can fulfill a user request. In this case the ability of the user to differentiate between the services depends upon their non-functional properties. Modeling, managing and performing service related tasks such as discovery, composition, negotiation and agreement based on NFPs become fundamental challenges in Service-Oriented Architectures especially in real business settings. Directly connected to the tasks mentioned above are the specification, enforcement and management of Service Level Agreements (SLAs). SLAs give the service consumer some level of guarantee that the provider and the service/s that they provide will operate within acceptable bounds - particularly with regards to non-functional properties and QoS values. At the same time SLAs serve a role for the provider in planning resource allocation and avoiding unexpected legal wrangles. With the ever-growing demand for eBusiness, service providers are increasingly interested in enforcing contracts electronically allowing autonomous supervision of service status and management. Machine-understandable NFPs and QoS models are therefore key to the widespread uptake of SLAs as well as all of the service related tasks mentioned above.

The workshop aims to tackle the research problems around methods, concepts, models, languages and technology that enable management of non-functional properties and Service Level Agreements in the context of Service Oriented Computing. This proposed workshop aims to bring together researchers and industry attendees addressing these issues, to promote and foster a greater understanding of how the management of NFP, QoS and SLAs can assist business to business and enterprise application integration.

NFPSLAM-SOC'10 December 1, 2010 co-located with ECOWS '10
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European Workshop on Practical Aspects of Service Oriented Computing Governance (E-PASSING) (CANCELLED)
December 1, 2010

Chairs: Pierre de Leusse, Krzysztof Zielinski, Nektarios Georgalas, Panos Periorellis

The way enterprises conduct business today is changing greatly. The enterprise has become more pervasive with a mobile workforce, outsourced data centers, different engagements with customers, suppliers and distributed sites. In addition, companies seeking to optimize their processes across supply chains are implementing integration strategies that increasingly include their customers and suppliers. This amplifies the need for the governance of end-to-end transactions between business partners and the customer.

The advantages of Service Computing to allow organizations to integrate service oriented resource regardless of their origins, re-use these assets in different contexts and manage the required contextualization efficiently are well known. However, there are still many challenges to be solved in this important field of research. The wide variety of tools, techniques, and technological solutions that can be implemented render the domain of SOC governance difficult to manage. In particular, the aspects of policy definition and enforcement, service asset visibility and alignment of services to business objectives have seen a lot of hype in the past years but very few concrete and effective solutions.

The European workshop on practical aspects of service oriented computing governance (E-PASSING), collocated with the 2010 European Conference on Web Services (ECOWS), is meant to be an opportunity for academic and industrial communities to discuss innovative implementations and techniques advancing the state-of-the-art in Service Oriented Computing (SOC) governance.

E-PASSING December 1, 2010 co-located with ECOWS '10
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4th International Workshop on Web APIs and Services Mashups (Mashups'10)
December 1, 2010

Chairs: Agnes Koschmider, Cesare Pautasso, Christian Zirpins

Services computing and Web 2.0 are converging into a programmable Web today that provides the basis for Services Mashups - end-user-oriented compositions of Web APIs, Web content and Web data sources. The result is a disruptive class of diversified, agile and interactive software systems that offer unprecedented user experience and open up new fields of application. However, the integration of services computing and Web 2.0 technologies exposes various complexities like programming models and methodologies, platforms and ergonomics in different operational contexts as well as economic and social environments that have to be faced.

The Mashups'10 workshop will solicit contributions addressing these issues and aim to bring together several relevant communities from academia and industry working on a) mashup-based applications, b) generic mashup tools, platforms and infrastructure, c) cross-cutting concerns of software service engineering and d) related topics from areas like social networking or economics. Mashups'10 continues the tradition of three previous events (2007 in Vienna, 2008 in Sydney and 2009 in Orlando) and will not only offer a broad range of papers in the space but also present keynote speakers from leading industry groups that are currently offering mashup tools and platforms for wide-consumptions and availability.

Mashups'10 December 1, 2010 co-located with ECOWS '10
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