Book excerpt: This book constitutes the refereed proceedings of the 18th IFIP/IEEE International Workshop on Distributed Systems, Operations and Management, DSOM 2007, held in the course of the 3rd International Week on Management of Networks and Services, Manweek 2007. It covers peer-to-peer management, fault detection and diagnosis, performance tuning and dimensioning, problem detection and mitigation, operations and tools, service accounting and auditing, Web services and management.