Product management is the discipline of guiding a product from idea to market through ongoing iteration, sitting at the intersection of business, design, and engineering. It balances what's worth building (business), what users need (design), and what's possible to build (engineering). It is owned by a role (the product manager) responsible for the outcomes the product delivers rather than the outputs the team ships. It is one of the most over-titled and under-defined roles in modern tech, with the actual job varying widely by company stage and product type.
The canonical model, popularized by Marty Cagan in Inspired (first edition 2008, third 2017), describes product management as the three-legged stool of value (will cu...