Open_Days_2009 Official presentation of the keynote: Unite and innovate! European clusters for recovery. The wealth of Member States and regions is increasingly dependent on the development of appropriate framework conditions to promote innovation and productivity. Clusters are at the core of innovative development and can create a powerful stimulus for growth, by bolstering connection between companies and centres of research and education. The Commission has published a communication to develop strong world-class clusters as the main drivers for Europe’s competitiveness. However, Europe’s clusters are large in number but small in scale. While world-class clusters are fundamental to competing internationally, existing clusters still have great potential to respond to the needs of the market and to help developing European regions. Strategies to develop both type of clusters are not mutually exclusive, but may involve important trade-offs that need to be analysed. What does it take to develop world-class clusters in Europe? Which trade-offs do strategies to develop world-class and small-scale clusters imply? What is the role of companies in fostering cluster development?