The Introduction discusses the impact of the Great Recession upon innovation spending, and with it, a rethinking of how companies can and should innovate. Open Innovation itself has been affected by the recession, and is sometimes used now as a synonym for outsourcing or cost cutting, which was not the intention of the original concept. A renewed understanding of Open Innovation is needed to unlock its potential to deliver growth, rather than simply cut costs. The role of innovation infrastructure, both for the overall society and for the focal organization, is emphasized as a key to renewing growth through innovation. The Introduction goes on to describe the plan of the book, and introduces the three facets of innovation: generation, dissemination, and absorption. Four possible paths for reading the book are outlined, for practicing managers of innovation, for innovation policy makers, for academic scholars, and for very time-pressed readers.