The title "Tailor-Made Silicon-Oxygen Compounds - From Molecules to Materials the topic of a workshop at the Centre of Interdisciplinary Research (ZiF) in Bielefeld, organized by the editors of the monograph. The field of SiO compounds is actually very exciting and rapidly developing. About 25 leading scientists from different areas (molecular chemistry, solid-state chemistry, material science, physical and theoretical chemistry) present newest results and scientific perspectives within the following subdisciplines: Fundamental SiO-systems; siloxenes; silicon monoxide; functionalized siloxanes; silicate assembly; siloxane assembly.