What are the key differences between QA and QC?

Quality Assurance and Quality Control are two facets of quality management. Are you confused with key differences between QA (quality assurance) vs. QC (quality control) in software testing? No problem! Keep reading to know the dissimilarity.

Although QA & QC are both aspects of quality management, they are primarily different in their focus:

  • QA is process-oriented & focuses on flaw prevention, while
  • QC is product-oriented & focuses on defect detection.

[Knowledgebase: In the ISO 9000 standard, clause 3.2.10 defines Quality Control as: “A part of quality management focused on fulfilling quality requirements”. Clause 3.2.11 defines Quality Assurance as: “A part of quality management focused on giving confidence that quality requirements will be fulfilled”

According to NASA, the most rigorous software engineering firms:

  • Software QA: “The function of software quality that assures that the standards, processes, and procedures are appropriate for the project and are correctly implemented”
  • Software QC: “The function of software quality that checks that the project follows its standards, processes, and procedures and that the project produces the required internal and external (deliverable) products”

In short, Quality Assurance concentrates on the process of quality, while Quality Control concentrates on the quality of productivity.]

Differences between QA & QC

Difference between QA and QC
Difference between QA and QC

In a nutshell, we can say that QA (Quality Assurance) is the prevention of defects, while QC (Quality Control) is their detection.

If you have any query regarding the same, or would like to share your feedback, we are open to discuss!!