QA vs. QC

Quality assurance (QA) and quality control (QC) are two terms that are often used interchangeably. Although similar, there are distinct differences between the two concepts. Lets talk about the differences between quality control and quality management, and provide definitions and examples of each. 

What is Quality?

Quality is meeting the requirement, expectation, and needs of the customer is free from the defects, lacks and substantial variants. There are standards needs to follow to satisfy the customer requirements. 


What is Quality Assurance

Quality assurance is a method of making the software application with less defects and mistakes when it is finally released to the end users. QA includes activities that ensure the implementation of processes, procedures and standards in context to verification of developed software and intended requirements.
Quality Assurance is defined as an activity that ensures the approaches, techniques, methods and processes designed for the projects are implemented correctly. It recognizes defects in the process. Quality Assurance is completed before Quality Control.

It is Process-oriented preventive activities.


  • Quality assurance reduce costs. Less waste and re-testings is a result of quality assurance. In other words, there will be lesser defective products.
  • Recognizing workers motivate them, eventually making them more eager to do their jobs properly.
  • Quality assurance emphasizes “self-checking”. Meaning, the boss or your peers will not be checking-up on you.
  • Quality is what quality assurance aims for. This will give the company marketing advantage if the maintain a consistent level of quality.
What is Quality Control

Quality Control is known as QC and focuses on identifying a defect. QC ensures that the approaches, techniques, methods and processes are designed in the project are following correctly. QC activities monitor and verify that the project deliverable meet the defined quality standards.

Quality Control is a reactive process and is detection in nature. It recognizes the defects. Quality Control has to complete after Quality Assurance. QC is a process which deliberates on fulfilling the quality request.Q C aim is to identify and improve the defects.

Quality control is a reactive process. It aims to identify and fixing any defect in the product.

Finding and fixing defects is possible by using tools. These tools and equipment are helpful to meet customer requirements.


Just like quality assurance, quality control has advantages, too. Among these advantages are:

  • Cost reduction
  • Boosts employee morale
  • Maximizing utilized resources
  • More sales
  • Satisfied customers
  • Minimize variations

QA and QC are both part of Quality management and these are the powerful techniques which can be used to ensure that the deliverable are of high quality and meet expectations of the customers.

QA & QC both are different from each other and required as part of quality management. They should not be misunderstood as interchangeable terms. QA is process focused while QC is end-product focused.

Quality control is inspecting something (a product or a service) to ensure that it is working fine. If the product or service is not working fine, then the issue needs to be fixed or eliminated in order to meet conformance standards. So, it aims at detecting and correcting issues.

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