Clusters are networks of compatible or competitive inter-related companies working together to strengthen an industry in a particular area. They make it easier for companies to gather good practice and exchange information in a given region and within a specific industry. However, little information is exchanged between clusters, and cluster managers often struggle to get a concise overview of what works well and how good results are achieved within clusters developed in other industries. Clusters also lack visibility, as they often lack the critical mass needed to advertise their existence and their ideas to other regions in and outside Europe. CLOE’s main aim is to create a European network of clusters. In the process, it is meeting three key objectives: learning from what has been developed by other clusters in other industries and regions; fostering the exchange of knowledge and expertise between cluster SMEs operating within the same industry; and increasing cluster visibility within the partner regions, in other European regions and in countries like China and the USA.