Wikipedia says, A product manager communicates product vision from the highest levels of executive leadership to development and implementation teams. The product manager is often called the product CEO. The product manager investigates, selects, and drives the development of products for an organization, performing the activities of product management. Aha! explains: The product manager is the person responsible for defining the ‘why’, ‘what,’ and ‘when’ of the product that the engineering team will build. They are the CEO of their product -- which means they lead cross-functional teams from a product's conception through to its launch. Marty Cagan, i n his book Inspired, describes the job of the product manager as “to discover a product that is valuable, usable and feasible”. I will say we are people that manage the interception, between business, user experience and technology and marketing and consumer ser...