What is ISO 9001:2015 certification? ISO 9001:2015 is the latest and updated version of ISO 9001 standard. The digit '9001' stands for 'quality management system (QMS)' and '2015' is year of revision. Hence ISO 9001:2015 is certification of quality management system of an organisation. QMS (ISO 9001) certification encompasses every aspect of your business right from planning, purchase till after sales services. So achieving ISO 9001 certificate literally means that you have well defined & well implemented SOP's for all your business processes. ISO 9001 certification is a symbol of trust for your customers.