Every member of the product team is important. To succeed, a company must design, build, test and market the product effectively. That said, there is one role that is absolutely crucial to producing a good product, yet it is often the most misunderstood and underutilized of all the roles. This is the role of the product manager. In this paper we discuss the role and responsibilities of the good product manager, and then we look at the characteristics of good product managers, where to find them, and how to develop .