This document discusses how to build an effective product roadmap. It explains that a roadmap should have a clear product vision and deliver innovation through frequent, incremental releases. Roadmaps can be feature-oriented, mapping features onto a timeline, or goal-oriented, focusing on meeting goals like acquiring users or generating revenue. Data-driven roadmaps choose metrics like product usage, customer retention, or monthly recurring revenue. The RICE method prioritizes efforts based on their reach, impact, confidence, and effort. Finally, the roadmap informs the product backlog for agile development using metrics like throughput, lead time, and cycle time.