groups This book is aimed at product developers and decision makers in practice. Science is offered a helpful reference book and interested engineering students can immerse themselves in the development of modular product families with the necessary basics. This book is a translation of the original German 1st edition Methodische Entwicklung modularer Produktfamilien by Dieter Krause & Nicolas Gebhardt, published by Springer Fachmedien Wiesbaden GmbH, part of Springer Nature in 2018. The translation was done with the help of artificial intelligence (machine translation by the service DeepL.com). A subsequent human revision was done primarily in terms of content, so that the book will read stylistically differently from a conventional translation. Springer Nature works continuously to further the development of tools for the production of books and on the related technologies to support the authors.