Starting from case studies, the authors develop a methodological representation of intelligent software agents. In addition to the fundamentals, the influences of artificial intelligence, networks, and communication systems are described in detail. Following the relevant development methods and tools, the application areas for intelligent software agents are presented. In numerous examples, the reader will find detailed descriptions of individual software agents, particularly the Firefly and Kasbah agents. The exploration of the building blocks and the practical implementation of intelligent software agents are treated equally. Thus, the book is suitable for both users and developers.