Quality Assurance VS Quality Control

You might have heard about the concepts Quality assurance and Quality control but didn’t know the difference between them. Both the terms are related to software testing. People frequently use QA and QC to describe the same processes. So it is not surprising that we still confused about these concepts. QC is defined as QA engineering in some test plans.

Considering all the things, a QC engineer tests the development process a product while the main objective of QA is to guarantee the implementation of the considerable number of methodologies that can improve the quality of software. Let us see both the concepts one by one, Quality assurance and Quality control. 

What is quality?

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

What is Quality Assurance?

Quality assurance is a method of software application development with less defects and mistakes when it is finally released to the end users.

It is characterized as an action that guarantees the approaches, techniques, methods and processes designed for the projects are implemented correctly. Quality Assurance is completed before Quality Control is performed after completion of . It detects the defects in the process. Also it focuses on preventing defects. Quality Assurance is a proactive process and is Prevention in nature. 

Benefits of Quality Assurance-

The goal of QA is to ensure that product development is done according to all the stated standards of quality. From the idea and the general plan to the assembly of the end product the QA-engineer focuses on the software development process, improves it, and also prevents defects and problems.

The QA management means:

  • Checking the specifications and also software requirements.
  • Test planning
  • Development of ideas that will improve the quality of the product
  • Risk assessments
  • Analysis of the test results

The main advantage of QA management is that you know precisely at what stage and also at which point the QC engineers need to start their work. Of course, it requires the foundation of a test plan, test documentation, and a test environment.

Responsibilities of QA specialist:

  • The analysis and specification of requirements with client or with the business analysts.
  • Scheduling the testing processes
  • Writing test cases (scenarios to test)
  • Functional testing
  • Identification of problem areas
  • Discussing changes and also different fixes with the developers
  • Tracking the life cycle of each error
  • Re-testing fixed defects
  • Analysis of the test procedures
  • Testing process optimization
  • The analysis of the processes in a team
  • Process improvement
  • Test documentation management

What is Quality control?

Quality Control is a software engineering process that is used to guarantee that the approaches, techniques, methods and processes are designed in the project are following accurately. Quality control activities operate and also verify that the application meet the defined quality standards. It focuses on analyzing the quality of the end products and the final outcome instead of  concentrating on the processes used to create a product.

Advantages of QC-

First of all, it should be noted that QC is a part of QA. A QC specialist analyzes the test results and is responsible for the identification and also elimination of defects in the project. They ensure that the results of what the developers have done are what we expected to see. In general quality control checks the current quality level of the tested object with the help of following criteria as:

  • Front end loading measurement
  • Conformity to requirements
  • Compliance of the project to the stated quality

Before the starting of QC, you have to choose what the standards of quality for the end product are. After that, we have to define the volume in which the test process will be carried out. At the next step, the analysis of real-life statistics is figure out. Only then can someone decide what further action to take. In case of IT industry, we need to keep fixing the project until all defects are removed and the end product will satisfy the client’s needs.

If there are a large number of errors, you need to make a decision to possibly change the development plan. In the final analysis, QC is a continuous process, which has a focus to eliminate defects and provide quick responses to emerging problems.

Quality Assurance VS Quality Control-

Quality Assurance vs Quality Control

Many people think QA and QC are the equivalent and interchangeable but this is not true. QA and QC both the terms are connected and sometimes it is very difficult to realize the differences. Truth is both are identified with one another yet they are diverse in starting points. QA and QC both are part of Quality Management. However QA is focusing on preventing defect while QC is focusing on identifying the defect.

1. Definition- 

QA is a process for ensuring quality in the processes by which products are developed.

QC is a process which deliberates on fulfilling the quality request.

2. Focus on-

QA aims to prevent defects with a focus on the process used to make the product. It is a proactive quality process.

QC aims to identify (and correct) defects in the finished product. Quality control, therefore, is a reactive process.

3. Goal-

The objective of QA is to improve development and test processes so that defects do not emerge when the product is being developed.

The goal of QC is to identify defects after a product development and before it’s released.

4. What-

Quality assurance prevents quality problems through planned and systematic activities including documentation. The activities or techniques used to accomplish and keep up the product quality, process and service.

5. How-

QA establishes a good quality management system and the evaluation of its adequacy. It also includes periodic conformance audits of the operations of the system.

Quality control finds & eliminates the sources of problems through tools so that customer’s requirements are continually met.

6. Responsibility-

Everyone in the product development team is responsible for quality assurance.

Quality control is usually the responsibility of a specific team that tests the product for defects.

7. Statistical Techniques-

Statistical Tools & Techniques can be applied in both QA & QC. When they are applied to processes (process inputs & operational parameters), they are called Statistical Process Control (SPC); & it becomes the part of QA.

When statistical tools & techniques are applied to finished products (process outputs), they are called as Statistical Quality Control (SQC) & comes under QC.

8. As a tool-

QA is a managerial tool.

QC is a corrective tool.

9. Orientation-

QA is process oriented.

QC is product oriented.

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