In the mid 1990s, Tim Berners-Lee had the idea of developing the World Wide Web into a "Semantic Web", a web of information that could be interpreted by machines in order to allow the automatic exploitation of data, which until then had to be done by humans manually.

Part I Colleagues and Historical Roots.- A Retrospective on Semantics and Interoperability Research.- Semantic Web and Applied Informatics: Selected Research Activities in the Institute AIFB.- Effectiveness and Efficiency of Semantics.- Knowledge Engineering Rediscovered: Towards Reasoning Patterns for the SemanticWeb.- Semantic Technology and Knowledge Management.- Tool Support for Ontology Engineering.- Part II Academic Legacy.- Combining Data-Driven and Semantic Approaches for Text Mining.- From SemanticWeb Mining to Social and Ubiquitous Mining.- Towards Networked Knowledge.- Reflecting Knowledge Diversity on theWeb.- Software Modeling Using Ontology Technologies.- Intelligent Service Management-Technologies and Perspectives.- Semantic Technologies and Cloud Computing.- Semantic Complex Event Reasoning-Beyond Complex Event Processing.- Semantics in Knowledge Management.- Semantic MediaWiki.- RealWorld Application of Semantic Technology.