Quality Assurance – Everything You Need To Know

Quality Assurance – Everything You Need To Know

A technique to guarantee the quality of software goods or services offered to clients by a business is known as quality assurance in software testing. The goal of quality assurance is to increase the efficiency and effectiveness of the software development process in accordance with the quality standards established for software products. Testing for quality assurance is sometimes referred to as QA quality assurance.

  • Quality is extremely hard to define, and it is simply stated: “Fit for use or purpose.” It all comes down to fulfilling the requirements and expectations of the consumer in terms of the product’s usefulness, design, dependability, durability, and pricing.
  • Assurance is nothing more than a confident statement made about a good or service. It is the assurance that a good outcome is guaranteed for a good or service. It offers a warranty that the product will perform faultlessly in accordance with expectations or needs.

What is quality assurance?

Quality assurance (QA) is any systematic process of determining whether a product or service meets specified requirements. QA creates and upholds standards for creating or producing dependable goods. A quality assurance system helps a firm to compete more effectively with rival businesses by enhancing work processes and efficiency as well as client confidence and a company’s credibility.

The International Organization for Standardization (ISO), which is a major influence behind QA procedures and process mapping, is responsible for implementing QA. QA and the worldwide ISO 9000 standard are frequently combined. To make sure that their quality assurance system is in place and working properly, many businesses adopt ISO 9000.

The manufacturing sector introduced the idea of QA as a structured technique, which has now expanded to numerous sectors, including software development.

quality assurance

Why does your business need quality assurance?

A corporation may produce goods and services that satisfy consumers’ demands, expectations, and standards with the use of quality assurance. It produces high-quality product offers that encourage consumer trust and loyalty. A quality assurance program’s rules and guidelines aid in preventing product flaws before they occur.

Pros and Cons

A significant competitive difference is the caliber of goods and services. Quality control makes ensuring that businesses produce and deliver goods that are free of flaws and satisfy client wants and expectations. Satisfied consumers are more likely to be loyal, make repeat purchases, upsell, and advocate for your products.

Due to the elimination of product flaws, quality control can result in cost savings. A company will incur costs for customer assistance if a product is supplied to customers and a problem is found, such as for receiving the defect report and debugging. It also includes the cost of resolving the flaw, such as the service or engineering time required to fix it, the cost of testing the remedy, and the price of releasing the revised product into the market.

There must be a significant investment in both people and procedures for QA. A process workflow must be defined, and a QA team must supervise its execution. The delivery date of the items may be impacted by this lengthy process. With rare exceptions, QA’s drawback is more of a necessity—a step that must be completed in order to ship a quality product. Without quality assurance testing, additional detrimental consequences like product problems and the market’s discontent or rejection of the product appear.

quality assurance

Quality assurance process

The PDCA cycle, often known as the Deming cycle, is a specified cycle in the quality assurance system. This cycle’s stages are: Plan, Do, Check and Act.

The aforementioned actions are repeated to guarantee that the organization’s procedures are periodically assessed and enhanced. Let’s take a closer look at the quality assurance process mentioned above:

  • Plan: Organizations should plan, set process-related goals, and identify the procedures needed to provide a high-quality final result.
  • Do: Process development, testing, and “doing” improvements to the processes.
  • Check: Monitoring of processes, process modification, and evaluation of whether it achieves the set goals.
  • Act: A quality assurance tester should take the required steps to accomplish process improvements.

To make certain that the product is created and deployed according to the right methods, a business must utilize quality assurance. This lessens issues and mistakes in the finished result.

quality assurance process

3 methods of IT quality assurance

Quality assurance utilizes one of three methods:

    • Failure testing: It continuously examines a product to see whether it malfunctions or breaks. Testing the product under extreme conditions like heat, pressure, or vibration may be necessary for physical items that must endure stress. Failure testing for software products may entail subjecting the program to heavy usage or load situations.
    • Statistical process control (SPC): A process created by Walter Shewhart in the 1920s and 1930s at Bell Telephone Laboratories and Western Electric Company that is based on factual data and analysis. This methodology manages and regulates product manufacturing using statistical techniques.
    • Total quality management (TQM): This uses quantitative techniques in the process of IT quality assurance as the cornerstone for ongoing improvement. TQM uses data, analysis, and facts to assist product planning and performance evaluations.

Quality Control (QC) vs Quality Assurance (QA)

Some individuals could conflate quality assurance and quality control (QC). Although the two ideas are similar, they also differ significantly in key ways.

In practice, QA offers the general standards that are applied everywhere, whereas QC is a procedure that is production-focused, including things like inspections. QC deals with different difficulties, such as individual inspections or flaws, whereas QA is any systematic method for ensuring a product fulfills stated specifications.

Regarding software development, QA techniques aim to stop broken code or products, whereas QC uses testing, troubleshooting, and code fixes.

quality assurance vs quality control

The following are some examples of QC and QA activities:

Quality Control Activities Quality Assurance Activities
Walkthrough Quality Audit
Testing Defining Process
Inspection Tool Identification and selection
Checkpoint review Training of Quality Standards and Processes

SQA and Software Testing

Software quality assurance or quality assurance software includes software testing as a crucial component. Testing ensures the best possible production of a high-quality final product while saving time, money, and effort. Developers may automate and organize testing using various software tools and platforms to support SQA objectives.

Open source software testing tool Selenium can conduct tests in a number of well-liked programming languages, including C#, Java, and Python.

Developers and QA workers may execute and test code in real time using Jenkins, another open-source application. Due to the automation of software development and testing operations, it is highly suited for a fast-paced setting.


The following table details the distinctions between software testing and SQA:

SQA Software Testing
Software quality assurance refers to the technical procedures that guarantee quality Software Testing is to test a product for problems before the product goes live
Involves actions relating to the application of standards, processes, and procedures. Audits training is one example Involves product-verification-related activities Review testing is an example
Process focused Product focused
Preventive technique Corrective technique
Proactive measure Reactive measure
All of the organization’s future goods fell within the SQA’s purview A specific product is covered by the scope of software testing

Functions of quality assurance in software testing

There are 5 primary Quality Assurance Functions:

  • Technology transfer: Obtaining a product design document, collecting trial-and-error data, and evaluating the results are all part of this function in the process of quality assurance in software testing. The paperwork is circulated, reviewed, and approved.
  • Validation: A system-wide validation master plan is created here. Test criteria are approved in order to validate products and processes. Planning is done for the resources needed to carry out a validation plan.
  • Documentation: The dissemination and archiving of documents are under the authority of this testing quality assurance function. Any modification to a document must follow the correct change control process. approving all forms of documentation.
  • Assuring Quality of products
  • Quality improvement plans

Quality assurance in software

Software quality assurance (SQA) employs a methodical approach to identify trends and the necessary steps to enhance development processes. Unintended effects might result from finding and resolving code problems; it is possible to solve one issue while also breaking other features and functions.

Developers now place a high value on SQA since it allows them to catch faults early and cut down on costs and development time. An upgrade to software can damage other features and result in defects, sometimes known as bugs, even with SQA protocols in place.

There are several different SQA tactics. For instance, the Capability Maturity Model Integration (CMMI) is an SQA model with a performance enhancement focus. CMMI ranks the organizational areas’ maturity levels and identifies optimizations that may be used for improvement. The spectrum of rank levels includes chaotic to perfectly ideal.

Over time, SQA-based software development techniques including Waterfall, Agile, and Scrum have emerged. The goal of any development process is to maximize labor productivity.

The conventional linear methodology for software development is called waterfall. It is a step-by-step process that usually entails gathering requirements, formalizing a design, putting code into place, testing the code, fixing any issues, and then releasing it. Alternative development techniques were created since it is frequently thought to be overly sluggish.

Agile is a team-focused approach to software development where each stage of the project is treated as a sprint. Agile software development is very adaptable, but it lacks predictability because the project’s scope might alter at any time.

Developers are divided into teams to perform certain jobs, and each work is divided into many sprints in Scrum, which combines both methodologies.

Setting standard targets is the first step in implementing a QA system. Think about each strategy’s benefits and trade-offs, such as maximizing effectiveness, cutting costs, or limiting mistakes. To support the QA system and create quality standards, management must be prepared to modify processes and collaborate.

quality assurance software


Quality Assurance Certifications

The sector offers a number of certifications to guarantee that Organizations adhere to Standards and Quality Processes. This is a criterion that customers use when choosing a software vendor.

ISO 9000

This standard, which is connected to quality management systems, was initially developed in 1987. This aids the business in providing quality to its clients and other stakeholders. An organization that wants to become ISO 9000 certified must pass an audit of its processes, goods, and services. Reviewing and confirming that the organization is following the process as intended and determining whether current procedures need to be improved are the major goals.

This certification supports:

  • Boost the organization’s earnings
  • Strengthens trade both domestically and internationally
  • Increases staff productivity while reducing waste
  • Ensures excellent client satisfaction

CMMI level

The Capability Maturity Model Integrated (CMMI) is a method for process improvement created especially for software process improvement. It is based on the process maturity framework and utilized by the software industry as a generic tool for business processes. This framework is well-liked and frequently applied in software development organizations.

There are 5 CMMI levels. CMMI certifications range from level 1 to level 5, depending on how developed a company’s quality assurance mechanisms are.

  • Level 1 – Beginning: The quality environment is fragile at this time. Simply said, no procedures have been used or recorded.
  • Level 2 – Repeatable: Some repeatable procedures are used. This level guarantees that project-level procedures are followed.
  • Level 3 – Established: At the organizational level, a set of processes has been defined and recorded. These established procedures can be improved to some extent.
  • Level 4 – Managed: At this level, processes are successfully controlled using process measurements.
  • Stage 5: Optimizing: At this level, learning and innovation are used to continuously enhance the processes.


Quality Assurance is to check whether the product developed is fit for use. To do this, an organization should have procedures to follow and standards that must be periodically enhanced. It primarily focuses on the level of product or service we offer to clients when implementing software or in the aftermath of doing so.

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