This open-access book is an essential read for anyone interested in pandemic preparedness, research governance, and the ethical oversight of research. It examines the development of a pioneering research ethics framework designed for use during pandemics, guiding readers through the careful development of the PREPARED Code, while highlighting the key steps and lessons learned. The book also underscores the importance of supportive measures, such as user-friendly ethics training, to ensure effective implementation. Drawing from these insights, it offers recommendations for others seeking to develop their own clear, engaging, and accessible ethics code.