Cities are not just geographic regions of problems that policy and people can mitigate. They are platforms of creativity and innovation that drive social and economic growth in the world. Thinking about a city as a platform allows us to break down geographic, ethnic, and political boundaries to include the talents and ideas of anyone who has ever lived in "the city," visited the city, or wants to get involved. Technology and Open Data are the foundations of the platform, empowering civic participation, policy co-creation, and new ways of interacting and working in the 21st Century Urban Experience. Lets explore together what that looks like.