Quality Assurance (QA) is a systematic process implemented to ensure that products or services meet specified standards and fulfill customer expectations. It involves planning, monitoring, and evaluating various stages of production or service delivery to identify and rectify any defects or inconsistencies. Ultimately, QA aims to optimize efficiency, minimize defects, uphold the reputation, and reliability of the organization's offerings, fostering customer trust and satisfaction by consistently delivering products or services of superior quality.