This document discusses NASA's strategy for innovation through collaborative platforms and spaces. It provides examples of pilots conducted using platforms like InnoCentive, Yet2.com, NASA@work and TopCoder to solute challenges. Key lessons learned included identifying good challenges and developing strong challenge teams. NASA has since established the NASA Human Health and Performance Center and a Center of Excellence for Collaborative Innovation to continue this work. The document explores various collaborative models and spaces used at NASA to foster transparency, participation and collaboration.