The document discusses using impact maps and story maps to deliver value in agile product development. Impact maps help define high-level goals and outcomes and map deliverables to their impacts on stakeholders. Story maps focus on a particular stakeholder impact and refine deliverables into releases to support backlog management and collaboration. They allow optimizing and refining scope through prioritizing user activities and stories. The document provides examples of using both techniques and emphasizes measuring outcomes and impacts to validate assumptions and provide feedback.