Quality Assurance vs Quality Control – What’s the Difference?

Software TestingAutomation TestingTesting Tools

What is the definition of quality?

Quality is defined as satisfying the customer's requirements, expectations, and demands while being free of flaws, deficiencies, and significant variations. To meet the demands of the customers, certain criteria must be followed.

What is the definition of assurance?

Assurance is supplied by the management of a company, and it entails making a positive remark about a product in order to gain trust in the outcome. It ensures that the product will perform flawlessly and in accordance with the customer's expectations or wishes.

What does Quality Assurance entail?

QA stands for Quality Assurance, and it focuses on defect prevention. Quality Assurance guarantees that the project's approaches, strategies, procedures, and processes are appropriately applied.

Quality assurance operations ensure that the processes for managing and producing deliverables have been followed and are operational.

Quality Assurance is a proactive, prevention-oriented approach. It detects weaknesses in the procedure. Before Quality Control, Quality Assurance must be completed.

What is the definition of control?

Control is the process of comparing actual results to set criteria in order to test or validate them.

What does Quality Control entail?

Quality Control, or QC, is concerned with locating a flaw. QC guarantees that the project's approaches, techniques, methodologies, and processes are implemented appropriately. QC operations ensure that the project deliverables fulfill the established quality requirements by monitoring and verifying them.

Quality control is a reactive and detection-based procedure. It is capable at detecting flaws. After Quality Assurance, Quality Control must be completed.

The distinction between quality assurance and quality control is as follows

What Is the Difference Between Quality Assurance and Quality Control?

Many people believe that quality assurance and quality control are synonymous, however this is not the case. Both are inextricably related, and distinguishing the two can be difficult at times. Both are linked to one other, yet their roots are distinct. Both QA and QC are part of Quality Management, although QA focuses on defect prevention while QC focuses on defect detection.

Quality Control vs. Quality Assurance

The following is a list of the differences between Quality Control and Quality Assurance that one should be aware of −

Quality AssuranceQuality Control
It's a method for assuring that a high-quality request will be fulfilled.QC is a method of determining whether or not a quality request has been met.
The goal of quality assurance is to avoid defects.The goal of quality control is to find and fix flaws.
The practice of managing quality is known as quality assurance (QA).QC stands for quality control.
The software is not executed during QA.QC always entails putting the program into action.
Quality assurance is the responsibility of everyone in the team.Quality Control is the responsibility of the testing team.
Verification is an example of quality assurance.Validation is an example of quality control.
The term "quality assurance" refers to the preparation of a procedure.QC stands for Quality Control, and it refers to the actions taken to carry out the process as intended.
Statistical Process Control is a statistical technique used in quality assurance (SPC.)Statistical Quality Control is a statistical technique used in quality control (SPC.)
QA ensures that you are following the correct procedures.QC ensures that the outcomes of your work areas are intended.
QA Defines the standards and processes that must be followed in order to fulfill the needs of the consumer.While working on the product, QC verifies that the standards are followed.
The process of creating deliverables is known as QA.QC stands for quality control, and it is the process of ensuring that deliverables are correct.
QA is in charge of the entire software development process.The software testing life cycle is the responsibility of QC.

Is Quality Assurance Enough to Replace Quality Control?

"Why do we need to undertake QC (Quality Control) if QA (Quality Assurance) has already been completed?"

This is a concept that may cross your thoughts from time to time.

Why do we need to execute a round of QC if we have followed all of the pre-defined processes, rules, and standards accurately and completely?

After QA, QC, in my opinion, is essential.

We identify the procedures, rules, and strategies, create standards, and construct checklists, among other things, that must be utilized and followed throughout the project's life cycle.

And, while doing QC, we adhere to all of the stated procedures, standards, and rules established in QA to ensure that the project maintains high quality and that the final product meets or exceeds the customer's expectations.

QC inspects the end of the line, while QA inspects the line farther down. QC is concerned with discovering and repairing problems, whereas QA is concerned with preventing problems from occurring.

QA does not guarantee quality; rather, it builds and monitors the systems that ensure quality. Quality control is not the same as quality measurement. The findings of QC measurements may be used to improve/correct QA methods, which can then be effectively adopted in future projects.

The deliverable is the focus of quality control efforts. The methods utilized to develop the deliverable are the subject of quality assurance efforts.

Quality assurance and quality control (QA and QC) are two effective procedures that may be used to verify that outputs are of high quality and match customer expectations.

Because it focuses on the product or application, software testing falls under the category of quality control. We examine the quality in order to keep it under control. Furthermore, quality assurance ensures that we are conducting the tests correctly.

Assume we need to utilize an issue tracking system to keep track of defects while testing a web application.

QA would entail setting the standard for reporting a defect and what information should be included in a bug report, such as a synopsis of the problem, where it was discovered, procedures to replicate the bug, and screenshots, among other things. This is a method for producing a 'bug– report' deliverable.

When a problem is added to an issue tracking system in accordance with these guidelines, the bug report becomes our deliverable. This is a step in the quality assurance process.

Now, let's say we recognize at a later point of the project that adding a 'possible root cause' to a defect based on the tester's analysis will offer the Dev team with additional information; we'll amend our pre-defined method, and it will also be reflected in our bug reports.

The QC Process includes including this additional information in the bug report to aid in the speedier and more accurate resolution of the problem. As a result, QC provides advice to QA in order to enhance the QA and final deliverables.

Examples of real-life QA/QC scenarios

Example of Quality Assurance − Assume our team is working on completely new technology for a future project. Our staff members are technologically inexperienced. As a result, we must devise a strategy for training team members on the new technology.

We need to gather pre-requisites such as a DOU (Document of Understanding), design document, technical requirement document, functional requirement document, and so on, and share them with the team based on our understanding.

This would be beneficial while working on new technologies, as well as for any newbie to the team. The QA process includes gathering and distributing documentation, as well as launching the training program.

Example of Quality Control − How can we ensure that the training was completed successfully for all team members once it is concluded?

We'll need to gather data for this, such as the number of marks trainees received in each topic and the minimal number of marks expected when the training is completed. We may also ensure that everyone has completed all of the training by checking the candidates' attendance records.

If the applicants' marks meet the trainer's/evaluators' expectations, we may call the training a success; otherwise, we'll need to enhance our procedure in order to give high-quality training.

Collecting feedback from students at the conclusion of the training program is another technique to enhance the training process. Their comments will tell us what they liked about the course and where we can enhance the session's quality. As a result, such actions are a component of the quality assurance process.

Points to Remember

  • Processes are planned in QA to avoid defects.

  • QC deals with the finding of flaws and their correction while the product is being manufactured.

  • QA identifies flaws.

  • QC looks for flaws.

  • Quality assurance is a process-oriented discipline.

  • QC is concerned with the quality of the product.

  • Quality assurance is a system for preventing failure.

  • A failure detection system is known as QC.

Both QA and QC are essential as part of quality management and are distinct from one another. They must not be regarded as interchangeable words. QA is concerned with the process, whereas QC is concerned with the final result.

Inspection of anything (a product or a service) to ensure that it is in good operating order is known as quality control. If the product or service is not functioning properly, the problem must be resolved or removed in order to fulfill compliance criteria. As a result, it seeks to identify and rectify problems.

Quality assurance, on the other hand, tries to improve the process in order to prevent problems in the future. To summarize, quality assurance does not diminish the necessity for quality control, as quality control is at the heart of quality management.

Published on 01-Dec-2021 05:48:47