This document discusses how cities can become smarter through leadership and innovation. It outlines how data and new technologies are enabling cities to better plan, manage infrastructure and services, and engage citizens. This allows city leaders to anticipate and address challenges, make more informed decisions, and improve outcomes across areas like transportation, healthcare, education and public safety to enhance quality of life. Examples are given of how smarter approaches have helped optimize transportation networks, energy grids, and other city systems in places around the world.