The document summarizes the Theory of Change for the Impact and Innovation Unit (IIU) which aims to help advance outcome-based policy approaches in the Government of Canada. The IIU was established in 2017 to promote policy innovation, support public sector leadership, provide advice on outcomes-based funding, and continuously share insights. Its Theory of Change combines four major efforts: 1) Engaging leadership to grow outcomes-based approaches, 2) Showcasing co-creation design to encourage replication, 3) Using rigorous impact measurement to inform decision-making, and 4) Communicating transparently to support change. The IIU is committed to partnership, co-creation, being citizen-centered, using evidence, and being open/transparent