***Prof. Schahram Dustdar will give a keynote speech at CSSSIA08.
***The proceedings of CSSSIA08 will be published as a volume of ACM International Conference Proceedings Series (ICPS) and included in the ACM Digital Library, ISBN: 978-1-60558-107-1.

Service integration has the purpose of providing the final user with a single unified service, hiding the distribution and heterogeneity of the services provided by the autonomous providers. Generally, service integration approaches have focused more on  process modelling and execution aspects than on data integration, while the latter is often the most crucial determiner of successful integration in practice. Through the use of  context, a new generation of Web services (i.e., context-aware Web services) is expected to arise for the benefit of coping with the dynamic nature of the Internet. For instance, the best service provider in terms of quality guarantees and cost metrics would differ from  time-to-time. A composite-service provider must therefore regularly change the services invoked to provide the best service to his customers. The task of identifying the best service to invoke is the biggest challenge to overcome and necessitates techniques for detecting data and functionality changes in a service, methods for assessing the quality of the service, computing the cost of invocation etc.
Although the combination of context awareness and Web service composition sounds appealing, injecting context into adaptive service integration and management raises a number of significant challenges, which have not been widely recognized or addressed by the Web services community. Some of them are:

  • How to build a model of change: data, process and environment?
  • How, when and where to track the provenance of data and meta-data?
  • How to define and use effective and practical metrics to manage adaptation: how to compare ability of different services to adapt? How to compare different middleware?
  • What is the role of context and how to get the right one?

The objective of CSSSIA 2008 is to provide a forum for researchers and practitioners to exchange new ideas, developments, and experiences on the key technical challenges for deployment of context-enabled, adaptive Web services and integrated applications. Discussions will focus on where the state of the art is and where the challenges lie, and what practices are needed to enable and sustain a bright future.