QA, Qi, and QC are all related to quality management in different ways. QA (Quality Assurance) is the process of ensuring that a product or service meets specific quality standards. Qi (Quality Improvement) refers to the continuous effort to improve the quality of a product or service. QC (Quality Control) is the process of ensuring that a product or service meets the desired quality standards by inspecting and testing it before release. All three processes are important for ensuring high-quality products and services that meet the needs of customers.