What is ISO 9001?
ISO 9001 is the international standard for quality management systems. It asks an organisation to plan its processes, control documents and records, manage risks, measure results, deal with nonconformances, take corrective action and keep improving, with evidence that all of this happens.
Most ISO 9001 findings are about records: an outdated procedure on the floor, a corrective action with no follow-up, a gauge past its calibration date. None of them are hard to fix. They are hard to keep fixed with paper and spreadsheets.