According to the American Society for Quality (ASQ), “Quality assurance consists of that ‘part of quality management focused on providing confidence that quality requirements will be fulfilled.’ The confidence provided by quality assurance is twofold—internally to management and externally to customers, government agencies, regulators, certifiers, and third parties.
Quality control is that ‘part of quality management focused on fulfilling quality requirements.’ While quality assurance relates to how a process is performed or how a product is made, manufacturing quality control is more about the inspection aspect of quality management.”