ISO 9001:2015 is a globally accepted standard for creating a Quality Management System (QMS) (the International Organization for Standardization). The last time the standard was changed was in 2015, and the new version is called ISO 9001:2015.
The ISO looks at the standard every 6–8 years to make sure it meets the needs of organisations all over the world. Over 190 nations assess the standards, raise problems, and express the "voice of the customer" in the criteria.
If your company is certified to the standard, it can grow into new markets, countries, and industries. Thousands of companies have used this standard very successfully to save money and make more money.
Most organisations don't have a hard time getting ISO 9001:2015 certification. Organizations are very different in terms of size and complexity, but the ISO 9001 standard is made to work for all kinds of businesses.