The goal this workshop is to bring together researchers investigating agent technologies and multiagent system and researchers investigating interoperability of business applications, in the later case especially researchers from InterOp and ATHENA with some interest in agent-related research. The workshop focuses on technologies that support interoperability in networked organizations, on successful applications of these technologies, and on lessons learned. The idea is to discuss in how far agent technologies can support interoperability in this context and to compare current trends in the development of agent technologies with recent developments in service-oriented and model driven system design with respect to their ability to solve interoperability problems.