Clusters of firms and related organisations in a range of industry specialisations are a striking feature of the economic landscape in all countries. Their growth and survival depends on internal processes of specialisation, co-operation and rivalry, and knowledge flows that underpin the competitiveness of the firms within them. Cluster building is now among the most important economic development activities in OECD countries and beyond. This book looks at the importance and potential of cluster initiatives in Central and Eastern Europe as these countries integrate ever more strongly into the global economy. Existing clusters are mapped, recent policy advances are described and conclusions are drawn on the potential of business clusters to foster economic growth in the wider Central, East and South East European region.