This paper discusses five innovation policy imperatives critical to achieving green and digital transitions: coordinated government, stakeholder engagement, policy agility and experimentation, directionality and support for breakthrough innovation. The paper provides policy examples from Germany, based on the OECD Review of Innovation Policy: Germany, and other countries to illustrate in what ways countries have addressed these imperatives. Overall, the quality and scale of these policy responses need to increase if transitions are to succeed. Open questions for future policy research are also highlighted.