Book excerpt: The Implementation Playbook is designed to support effective implementation to achieve measurable progress toward health-related targets. It is ultimately based on the core principle that data and planning are not sufficient endpoints in and of themselves: you need to keep asking what for? in order to initiate actions that will keep up the momentum of your implementation efforts and the likelihood of reaching the desired results. This Pocket Edition of the Implementation Playbook is a consolidated version of the core content, and intended to be a “ready-to-use”, quick access guide for those involved in or supporting implementation efforts.