This document discusses impact-driven delivery using impact mapping and management. Impact mapping is a framework that maps out the desired impact of a product on business metrics and user needs from the "why" through solutions. It provides a solid ground for design, planning, and quality assurance. The document outlines impact mapping components and provides exercises to practice defining metrics, users, and evaluating designs based on the impact map. It also discusses how impact management can be used to continuously evaluate hypotheses and solutions to deliver desired value and impact.