Ann Mei Chang is a leading advocate for social innovation and the author of Lean Impact: How to Innovate for Radically Greater Social Good. As Chief Innovation Officer at USAID, Ann Mei served as the first Executive Director of the US Global Development Lab, engaging the best practices for innovation from Silicon Valley to accelerate the impact and scale of solutions to the world’s most intractable challenges. She was previously the Chief Innovation Officer at Mercy Corps and served the US Department of State as Senior Advisor for Women and Technology in the Secretary’s Office of Global Women’s Issues. Prior to her pivot to the public and social sector, Ann Mei was a seasoned technology executive, with more than 20 years’ experience at such leading companies as Google, Apple, and Intuit, as well as at a range of startups. As Senior Engineering Director at Google, she led worldwide engineering for mobile applications and services, delivering 20x growth to $1 billion in annual revenues in just three years. Ann Mei currently serves on the boards of BRAC USA and IREX, is a nonresident fellow at the Brookings Institution and the Center for Global Development.