Difference between Quality Assurance and Quality Control


Quality Assurance (QA) and Quality Control (QC) are two different terms that are often used interchangeably. However, there are clear differences in both these concepts.

QA is process-oriented and concentrates on fault avoidance or prevention, whereas QC is product-oriented and spotlights fault detection or discovery.

Quality Assurance vs Quality Control


QA seeks to avoid faults with an emphasis on the procedure used to produce the product. It is a pre-emptive (proactive) value procedure.

QC seeks to detect (and correct) faults in the completed product. Quality control, hence, is a permissive (proactive) procedure.


The target of QA is to enhance development and assessment procedures so that flaws do not occur while the product is being formed or used.

The target of QC is to detect faults next to a product being formed and before it’s released.


QA determines a great quality supervision scheme and the evaluation of its competence. Regular conformance checks or reviews of the functions of the structure.

QC Locating & eliminating causes of quality issues through means & gear so that customer’s constraints are constantly met.


QA: Inhibition of quality issues through scheduled and organized actions including documentation.

QC: The actions or skills used to attain and sustain the product’s worth, procedure, and provision.

Numerical Methods:

In QA, numerical means and methods are used in procedures (procedure inputs & functioning factors), that are named Statistical Process Control (SPC) and come under QA.

In QC, numerical means and methods are used to complete products (process outputs) and are named Statistical Quality Control (SQC).

As a tool:

QA is an administrative tool.

QC is a remedial tool.

Activity determined:

QA activities are determined before production work starts and these endeavors are accomplished while the product is being developed.

QC activities are carried out after the product is developed.

System (QA) vs Section (QC)

QA control systems are the practices and processes which are applied to maintain quality criteria. Quality control systems calculate parts, involving the outputs of the system.

QC attempts may also be centered on parts applied to generate the ultimate product, such as raw materials from a contractor. The QA system for quality management may influence several pursuits to ensure inputs are constantly reliable and successful, such as inspecting contractors and batch sampling raw materials.

Formation (QA) vs Certification (QC)

The consequence of QA actions is a roadmap for producing high-quality products. It entails specifying criteria for product layout, fabrication, packing, delivery, promotion, and deals.

QC entails confirmation of products’ post-production supply, verification, security, and value.

Industry Outlooks on QA and QC

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 real products. It may be essential to monitor product quality in a service company to guarantee that the service meets customer obligations.

QA, QC, and Checkup

Scrutiny is the procedure of quantifying, investigating, and checking to determine one or more attributes of a product or service and the contrast of these with needs to verify conformity. Products, procedures, and several other outcomes can be examined to make sure that the thing coming off a production line, or the service being offered, is accurate and meets requirements.

Quality Assurance and Audit Tasks

Auditing is a component of quality assurance tasks. It is essential to ensure quality because it is used to compare real situations with needs and to inform those findings to the administration.


QC and QA should be used at the same time, and they’re most excellent when both are integrated into an enterprise quality management system (eQMS) for end-to-end excellence developments and processes.

In short, Quality Assurance (QA) belongs to the method used to produce the product and can be executed by an administrator, user, or a third-party assessor. Cases of quality assurance consist of method checklists, task inspections, and procedure and specifications growth.

Quality Control (QC) belongs to quality-linked pursuits connected with the production of products. Quality control is applied to prove that products are of appropriate value and that they are perfect and precise. Examples of quality assurance actions consist of scrutiny, deliverable contemporary appraisals, and the scanning procedure.

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