DAI’s mission is to make a lasting difference in the world by helping people improve their lives. We envision a world in which communities and societies become more prosperous. Since 1970, we have worked in more than 150 countries—delivering results across the spectrum of international development contexts, from stable societies and high-growth economies to challenging environments racked by political or military conflict.us, fairer and better governed, safer, healthier, and environmentally more sustainable.