AbstractCertification of Quality Assurance Systems. Assurance of quality, working in a systematic and documented manner with the aim of contributing to constant improvement of the quality levels of a company, is now standard practice. A visible sign of quality competence is a quality assurance system certificate that is issued by a neutral certification body after assessment of the effectiveness of existing quality assurance systems. The German Society for the Certification of Quality Assurance Systems (DQS), a neutral, not‐for‐profit institution, performs such assessment in Germany on the basis of DIN ISO standards 9001, 9002, or 9003, and issues certification of quality assurance syst