Since the earliest moments of the Topic Maps paradigm, Michel Biezunski has been its most faithful developer and proponent. He is the co-editor of ISO/IEC 13250 Topic Maps and he was a founding Chair of TopicMaps.Org, the host of the XTM (XML Topic Maps) Specification. He is working to merge knowledge-based approaches with information management systems, both by designing custom applications and by fostering the development of new standards for the Web.