The QM system is responsible for quality assurance in a company and describes its quality management. Through a quality management system, the quality of the services is assessed and researched for improvements. The overview of the quality is always given and the requirements can be better met. Often, a quality manager works in large companies to ensure constant customer satisfaction. Customer feedback is assessed in the quality management system and implemented in the event of success. Complaints are also the responsibility of QM Management.If there are problems with the quality of the goods, the quality management can intervene quickly and fight the causes.