To obtain and maintain the ISO 9001:2015 certificate, regular external audits are carried out. These audits check if a company currently meets the standard specifications. An independent auditor checks all quality-relevant company processes. This includes compliance with and complete implementation of the standard specifications for all systems. The audit also ensures that all process specifications are implemented and up to date. Active risk planning and management is also part of the audit. Thus, the ISO audit is a valuable opportunity to optimize processes and eliminate error sources.