With its Leading-Edge Cluster Competition (in German: Spitzencluster-Wettbewerb; LECC), the Federal Ministry of Education and Research (Bundesministerium für Bildung und Forschung, BMBF) is supporting innovation clusters in a nationwide contest for the first time. In three rounds, 15 cluster initiatives were selected and provided with funds to support them on their way to becoming international leaders in their field of technology, or, if they already held such a position, to maintain or expand their lead. Through a sustainable mobilisation of regional economic potentials, supporting the strategic development of Leading-Edge Clusters has the goal of increasing growth, securing or creating jobs and enhancing the attractiveness of Germany as a location for innovation and business. The BMBF contracted a project consortium to conduct an accompanying evaluation of the LECC. This consortium consisted of RWI, Essen (project coordination); the Institut für Sozialforschung und Gesellschaftspolitik GmbH (ISG), Cologne; the Chair of Economics/Microeconomics at the Friedrich SchillerUniversity Jena, as well as the JOANNEUM RESEARCH GmbH, Graz. This summary of the final report comprises the main findings of the accompanying evaluation of the LECC for the duration of the project from 11/2008 to 04/2014.