This publication brings together articles on various issues in the development of federated information systems. As many examples of information systems in appication Areas such as business, finance, environmental science and medicine show there is an increasing need to make information available through some form of Federated Information System (FIS). The following topics are covered: analysis, design and implementation of FIS, software architectures of FIS, metadata management for FIS, domain specific solutions in the design of FIS, theoretical background for developing in FIS, application of FIS technologies.