There has been a radical change in the role of the supervisory board. Now more than ever, a modern understanding of corporate governance shapes the tasks of the supervisory board. The supervisory board thus has far more than a mere control function and is increasingly integrated into key corporate processes. As a high performance board, the supervisory board must recognise strategic developments and crises at an early stage and manage them jointly with the management board because, ultimately, the aim is to secure the future viability of the company in the long term.