The main objective of quality assurance is to avoid problems or to identify them as soon as possible. Quality assurance is making sure that a product or service maintains a set level of faulty. If more attention needs to be put on the processes to make sure that the quality stays, that's okay, but it needs to be maintained. QA is a shortened version of quality assurance and many company's have a QA team set in place so that mistakes and defects are prevented.