• June 26, 2023
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Are you one of those people who often get confused between Quality Assurance (QA) and Quality Control (QC)? If yes, then this blog post is for you! Many people use these two terms interchangeably, but they are not the same. While both QA and QC are essential components of a quality management system, they serve different purposes and have different objectives. Both QA and QC play a crucial role in software testing to ensure that software products meet customer requirements.


In this article, we’ll discuss the key differences between quality assurance and quality control with real-life examples. So let’s dive in and understand how these two processes work together to deliver high-quality software products!

What is Quality Assurance (QA)?

Quality Assurance refers to a proactive process implemented throughout the entire product development lifecycle. It encompasses all the planned and systematic activities that are designed to ensure that a product or service meets specified quality requirements. QA focuses on preventing defects and errors rather than detecting and correcting them.

The primary objective of QA is to establish processes and standards that promote consistent quality. It involves defining quality metrics, developing quality plans, and creating guidelines and procedures that govern the entire development process. QA is concerned with preventing problems from occurring by identifying potential risks, establishing controls, and implementing preventive measures. It emphasizes process improvement and adherence to standards, methodologies, and best practices.

In summary, QA is the umbrella term that covers all the activities aimed at preventing defects, improving processes, and ensuring that the right systems are in place to produce high-quality products.

What is Quality Control (QC)?

Quality Control, on the other hand, is a reactive process that focuses on identifying defects and errors in a product or service. It involves the inspection, testing, and measurement of products to ensure that they meet the established quality standards. QC activities are performed during the production phase or at the end of it, with the aim of identifying and eliminating defects before the final product reaches the customer.

The main objective of QC is to detect and correct deviations from quality standards. It involves conducting inspections, conducting sample tests, analyzing data, and verifying that products meet specific criteria and requirements. If any defects or non-conformities are identified, QC takes corrective actions to rectify the issues and bring the product back to the desired quality level.

In essence, QC is the process of monitoring and verifying product quality to ensure that it meets the predetermined specifications and customer expectations.

What are the Key Differences Between Quality Assurance And Quality Control (QA Vs QC)?

It’s important to note that QA and QC are complementary and often work together to achieve overall quality goals. QA sets the foundation for quality by implementing processes and standards, while QC verifies and validates the product or service against those standards. Both QA and QC are essential components of a comprehensive quality management system. Lets skim through some major differences between the two; 

Quality Assurance

Quality Control 


QA is proactive and preventive, focusing on establishing processes, standards, and methodologies to prevent defects and improve overall quality. 

QC is reactive and corrective, concentrating on identifying and rectifying defects after they occur.


Aproactive approach that starts early in the development or production process. It emphasizes preventive measures and continuous improvement to ensure quality throughout the entire process.

A reactive approach that occurs after the product or service has been developed or produced. It involves inspection, testing, and analysis to identify and correct defects or non-conformities.


It emphasizes process improvement, adherence to standards, and preventive measures. 

It focuses on product inspection, testing, and corrective actions.


QA is the responsibility of the entire organization, including management, engineers, and developers.

QC is typically the responsibility of dedicated quality control teams or personnel.


The goal of QA is to establish and maintain a high level of quality in products or services. 

The goal of QC is to identify and correct defects to ensure that products meet quality standards.

Does Quality Assurance Remove Need for Quality Control?

Many people believe that Quality Assurance (QA) and Quality Control (QC) are interchangeable terms, but they are not the same. As mentioned before, QA is a process of preventing defects in software products by planning and implementing quality control procedures, while QC is a process of detecting and correcting defects in software products.

Some people think that if they have an excellent QA process in place, it eliminates the need for QC. However, this is not true. The role of QA is to ensure that processes are followed correctly throughout the development lifecycle to prevent errors from occurring. On the other hand, QC occurs after development and focuses on identifying issues through testing so that they can be fixed before release.

In other words, even with a robust QA process implemented at every stage of development, there may still be unforeseen problems or bugs found during testing which require corrective action through QC activities. Therefore both these processes complement each other rather than substituting one another when it comes to delivering high-quality software products.

Real-life scenario Examples for QA/QC

Real-life scenario examples can help in understanding the difference between Quality Assurance and Quality Control. Let’s take a software development project as an example.

 Quality Assurance is about preventing issues from happening, while Quality Control is about identifying and fixing any issues that arise. In this case, QA would involve creating processes and procedures to ensure that code is written correctly the first time around. This could include setting coding standards, conducting peer reviews of code, or using automated testing tools.

On the other hand, QC involves testing the developed software to identify any bugs or defects that may have been missed during the development process. This could involve running manual tests on various aspects of the software, such as functionality or usability.

Another real-life example of QA/QC is in manufacturing processes. For instance, if a company produces food products like chips or cookies – they need to assure quality by making sure their equipment (ovens) comply with regulations for temperature control before production starts(QA). Once these requirements are met; then having a team check batches for consistency in size/shape/color etc.(QC) ensures end-users receive high-quality products.

These examples show how QA helps prevent problems from occurring while QC deals with identifying potential issues after they occur. Together they provide comprehensive coverage over ensuring product quality right from inception till delivery!

Wrapping Up 

In summary, Quality Assurance (QA) and Quality Control (QC) are two distinct yet complementary processes in the realm of quality management. While QA is concerned with preventing defects through process improvement and adherence to standards, QC focuses on detecting and correcting defects through inspection, testing, and corrective actions.

Both QA and QC are integral to maintaining and improving product quality. By implementing effective QA and QC practices, organizations can ensure that their products meet customer expectations, comply with industry standards, and foster a culture of continuous improvement.

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