Difference between quality assurance and quality control
Quality assurance and quality control are two aspects of quality management. While some quality assurance and quality control activities are interrelated, the two are defined differently.
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, quality control is more the inspection aspect of quality management.
Industry perspectives on assurance and control
For some service organizations, the concept of quality control may be foreign because there is no tangible product to inspect and control. The quality assurance function in a service organization may not include quality control of the service but may include quality control of any products involved in providing the service.
A service may include products that are documents (such as a report, contract, or design) or tangible products such as a rental car or units of blood. It may be necessary to control product quality in a service organization to ensure that the service meets customer requirements.
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