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While some quality assurance and quality control activities are interrelated, the two are defined differently. Typically, QA activities and responsibilities cover virtually all of the quality system in one fashion or another, while QC is a subset of the QA activities.
Quality assurance, or QA for short, means establishing a repeatable, measurable and proactive process into your manufacturing lifecycle that's aimed at preventing defects, errors and deviations from occurring, rather than just identifying and fixing them after they have already occurred.
What is Quality Control (QC)? Quality control (QC) is a product-oriented approach to quality to ensure that products or services meet specified quality requirements and standards. Quality control focuses on inspection and testing to verify that a product is safe and effective after production.
Quality Assurance (QA) comes first because Quality Assurance (QA) prevent software defects during development time while Quality Control (QC) identifies and fixes the defects or errors that exist after development.
Quality control (QC) focuses on monitoring results after a product is developed and produced. That means checking product development or project outcomes to meet the previously defined quality standards.
What are the differences between Quality Assurance and Quality Control? Even though both QA and QC share some commonalities, there are key differences. For example, QC focuses on measuring and verifying compliance, while QA focuses on preventing errors.
Definitions of QA and QC. Quality Assurance (QA) refers to the process used to create the deliverables, and can be performed by a manager, client, or even a third-party reviewer. Examples of quality assurance include process checklists, project audits and methodology and standards development.