A Product Manager exists for three basic reasons. For starters he manages the
revenue, profits, forecasting, marketing and developing activities related to a product
during its life cycle. Secondly, since to win a market requires deep understanding of
the customer, he identifies unfulfilled customer needs and so he makes the decision
for the development of certain products that match the customers and so the markets
needs. Finally he provides directions to internal organization of the company since he
can be the eyes and ears of the products path during its life cycle.