This document summarizes 20 rules for product management from Pragmatic Marketing. It begins by introducing the author, Maureen Rogers, and her background in product marketing. It then provides context on the Pragmatic Marketing framework and seminar which outlines these 20 rules. The main body of the document discusses each rule individually, providing Rogers' interpretation and lessons learned from her experience. Some of the key rules discussed include the product manager owning their role and not leaving gaps for others to fill, taking an outside-in approach to understand customer needs, focusing on strategy before tactics, and using market facts to guide product development over opinions. The document emphasizes the importance of these rules for ensuring product success.