Quality assurance (QA) is a systematic process and set of activities implemented in various industries to ensure that products or services meet predefined standards and specifications. The primary goal of quality assurance is to prevent defects, errors, or deviations from occurring during the development, manufacturing, or service delivery processes. This involves establishing rigorous testing, inspection, and documentation procedures to guarantee consistency, reliability, and adherence to regulatory requirements. Quality assurance encompasses a holistic approach, focusing on the final output and the processes involved, workforce training, and continuous improvement initiatives. Effective quality assurance programs contribute to customer satisfaction, product reliability, and organisations' overall success and reputation across diverse sectors.