QA(품질 보증) refers to the systematic process of ensuring that products or services meet specified quality standards. It involves various activities, including planning, monitoring, and evaluating processes to prevent defects and ensure customer satisfaction. The goal of QA is to improve and maintain the quality of products throughout their development and production. This can include testing, inspections, and audits to identify areas for improvement. By implementing QA practices, organizations can enhance their reputation and reduce costs associated with poor quality.