Quality assurance - Wikipedia
https://en.wikipedia.org/wiki/Quality_assuranceQuality assurance (QA) is the term used in both manufacturing and service industries to describe the systematic efforts taken to insure that the product(s) delivered to customer(s) meet with the contractual and other agreed upon performance, design, reliability, and maintainability expectations of that customer. The core purpose of Quality Assurance is to prevent mistakes and defects in the development and production of both manufactured products, such as automobile…