Governments and regional authorities often express the belief that the key to prosperity and economic expansion is related to the ability of countries to sustain regional clusters of competitiveness and innovation. The book reviews the most important conceptual approaches to the analysis of the emergence, growth and evolution of clusters of innovation. Drawing from the different experiences of industrial districts and high-tech regions such as Silicon Valley, Boston's biotech region, and Hsinchu-Taipei, the contributions in this book offer a broad interpretative framework and policy implications for the creation and strengthening of competitive clusters.