The discipline of Services Science, introduced by IBM in 2002, has emerged and matured in a true transdisciplinary atmosphere. Encompassing disciplines not only in management and engineering, it also draws from disciplines such as social and cog- tive sciences, law, ethics, economics etc. to address the theoretical and practical - pects of the challenging services industry and its economy. Services Science leverages methods, results and knowledge stemming from these disciplines towards the development of its own concepts, methods, techniques and approaches thus creating the basis for true trans-disciplinary gatherings and the p- duction of transdisciplinary results. Services Science is building a concrete framework for transdisciplinary purposes. IESS1. 0 - the First International Conference on Exploring Services Science - was the first international conference held in Europe in this domain. The conference took place during February 17-19, 2010 in Geneva, Switzerland. The goal of the conf- ence was to build upon the growing community to further study and understand this emerging discipline. Academics, researchers and practitioners of all disciplines were invited to contribute their results and approaches to Services Science in a tra- disciplinary setting. In order to achieve the best possible mix of disciplines and their representation, the conference call for papers was structured around transdisciplinary service research topics including service innovation, service exploration, service - sign, service engineering, and service sustainability, and around more disciplinary oriented service contexts such as: sectors and services, IT and services, foundations of services science, and governance and management.

This book constitutes the thoroughly refereed postproceedings of the 3rd and the 4th International Workshop on Databases, Information Systems and Peer-to-Peer Computing, DBISP2P 2005 and DBISP2P 2006, held in Trondheim, Norway, in August 2005 and in Seoul, Korea, in September 2006, as satellite events of VLDB, the International Conference on Very Large Data Bases.

The 39 revised full papers presented together with 1 invited contribution were carefully selected during two rounds of reviewing and improvement. According to the sessions held in the two editions, the papers of DBISP2P 2005 are organized in topical sections on knowledge discovery and emergent semantics, query answering and overlay communities, indexing, caching and replication techniques, complex query processing and routing, semantic overlay networks, services, agents and communities of interest. The papers of DBISP2P 2006 are thematically divided into data placement and searching, semantic search, query processing and workload balancing, as well as continuous queries and P2P computing.