Production is responsible for supplying goods in the right quantity, at the right time, with the desired costs and quality. This chapter elaborates on the aspects of supply and timelines of the workflows relevant for production. It looks at the long‐term strategic build‐up as well as the operative organization of commercial market supply. The chapter explains capacity planning parameters such as product demand and process yield. It highlights typical time schedules and questions of in‐house manufacturing. The chapter covers principal aspects of external manufacturing, considers the challenges of technology transfer, and summarizes a comparison between internal and external manufacturing. It talks about make‐or‐buy decision situations, and points to the possibilities and consequences of optimization efforts. The chapter provides the basic principles of supply‐chain management since the product finds its way to the client only through the supply chain.