There is a misunderstanding between the concepts of manufacturing industry (MI) and service industry (SI). Although the two industrial sectors show similarities and even offer products with common characteristics, these sectors still have important differences. Both developed proper techniques, like supply chain management (SCM) for the MI and yield management (YM) for the SI, and present a tendency to merge their products adapting each other techniques. The goal of this chapter is to contribute to a better understanding of the meaning of MI and SI.