Supervision is professional quality assurance! The scientifically grounded design of supervision processes is a prerequisite for professionally responsible action. Kornelia Rappe-Giesecke, supervisor and organizational consultant, provides the theoretical foundations and describes the standards of good supervision. The supervision processes are presented step by step: the structure of the sessions, setting characteristics, the role of organizational culture, and external influences on the supervision process. Practical examples illustrate different application cases of team and group supervision: concrete case work and the discussion of the professional role in psychotherapy and in Balint groups, institutional analysis, and analysis of work processes within the framework of organizational consulting.