Dr.-Ing. Robert Stein is managing partner of Prof. Dr.-Ing. Stein & Partner GmbH, managing director of STEIN Infrastructure Management GmbH and also one of the managing directors of STEIN Ingenieure GmbH. For more than 20 years, he has been active in the fields of pipeline construction, pipeline maintenance and network management. His current focus is on the asset management of water supply and wastewater disposal networks with the help of forecast-based strategy analyses for medium- and long-term investment cost optimisation. He is the author of the reference books “Wertermittlung von Abwassernetzen”, “Trenchless Technology for Installation of Cables and Pipelines – 2nd Volume: Horizontal Directional Drilling (HDD)” and co-author of the 4th edition of the international bestseller “Rehabilitation of Drains and sewers”. He received the European e-learning Award for the development of a web-based knowledge platform.