Book excerpt: This book offers an analysis of the formation of contemporary hospital systems between the mid-19th century and the mid-20th century. Based on extensive archival material and a broad international literature review, it focuses on the case of the canton of Vaud, Switzerland, and uses a triple approach that discusses technological innovations, hospital management, and health policy. This research is a major contribution to the history of medicine which gives a unique overview of the formation of contemporary hospital systems.