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Quality Engineering vs Quality Assurance: Goals & Differences

Quality Engineering vs Quality Assurance

Quality assurance (QA) and quality engineering (QE) are essential components of the software development ensuring highest quality product. While the terms are often used interchangeably, they encompass distinct roles and responsibilities within the development team.

QA vs QE - Basics

QA/QE practices align seamlessly with Agile methodology and DevOps emphasis on continuous integration and continuous delivery. Quality checks and test automation can be integrated into the development pipeline, ensuring that potential defects are identified and addressed early in the process, leading to more stable and reliable software releases.

What is Quality Assurance?

Quality assurance is a systematic approach to monitoring and improving the development process to ensure that the final product meets predetermined quality standards. It involves defining processes, establishing guidelines, and implementing practices that prevent bugs and ensure consistency.

Quality assurance focuses on creating and maintaining a framework that promotes adherence to established quality standards throughout the development process. By implementing procedures and protocols, QA seeks to minimize risks, increase efficiency, and deliver a reliable end product.

QA meme


QA aims to ensure consistent and uniform quality across products or services.

By establishing and adhering to defined processes and standards, QA helps in minimizing variations in quality that can arise due to human error or process deviations.

By maintaining consistent quality levels, organizations can enhance customer satisfaction, build trust, and foster long-term relationships with their clients.

QA ensures that products and services adhere to relevant industry standards, regulations, and guidelines. This is particularly important in regulated industries such as healthcare, aerospace, and finance, where non-compliance can lead to severe consequences.

Check also codeless automation testing tools for QA

Quality Assurance for APIs

QA teams execute tests to ensure that the API functions as intended. They test various scenarios, inputs, and outputs to verify that the API performs the specified actions accurately and produces the expected results.


Key performance indicators (KPIs) are essential in evaluating the effectiveness of quality assurance efforts. Metrics such as defect density, test coverage, and customer satisfaction ratings provide insights into the product's quality.


QA professionals utilize a variety of tools to streamline their processes, including automated testing software, version control systems, and bug tracking systems.

These tools help ensure efficient collaboration and thorough testing throughout the software development lifecycle.

QA Skills

QA engineers need a strong understanding of software development methodologies, testing techniques, and best practices. Strong communication skills, attention to detail, and analytical thinking are crucial for identifying potential issues and communicating them effectively.

QA Certifications

Certifications such as ISTQB (International Software Testing Qualifications Board) provide QA professionals with standardized knowledge and skills in software testing.

These certifications validate expertise and demonstrate commitment to maintaining high-quality standards.

What is Quality Engineering?

Quality engineering is an advanced approach that extends beyond the traditional boundaries of QA.

It involves integrating quality practices throughout the entire development lifecycle, fostering a culture of quality, and using data-driven insights to make informed decisions. It emphasizes prevention over detection and aims to build quality into every aspect of the software development lifecycle.


Instead of relying solely on detecting and fixing defects after they occur, quality engineering focuses on preventing them by implementing rigorous processes and best practices at each stage of development. This proactive approach helps minimize rework, reduce costs, and enhance overall product quality.

Quality engineering emphasizes collaboration across multidisciplinary teams. It encourages developers, designers, product managers, and other stakeholders to work together to ensure that quality considerations are integrated throughout the development lifecycle.

This collaborative approach improves communication, and fosters a shared responsibility for delivering high-quality software.

Data-Driven Insights

Data plays a pivotal role in quality engineering. By collecting and analyzing relevant data, quality engineers gain insights into the performance of the development process and the product itself.

These insights guide decision-making, highlight areas for improvement, and help in identifying patterns and trends that could impact product quality.

Continuous Improvement

Continuous improvement is a cornerstone of quality engineering.

By regularly assessing processes, tools, and methodologies, quality engineers identify opportunities for enhancement and innovation. They seek to optimize workflows, refine practices, and adopt emerging technologies to ensure that the development process evolves in alignment with industry best practices.


Common QE metrics include defect density, which quantifies the number of defects in a given codebase, test coverage measuring the proportion of code exercised by tests, and mean time to detect (MTTD) and mean time to resolve (MTTR) indicating how quickly defects are found and resolved.

Additionally, customer satisfaction metrics, like Net Promoter Score (NPS), gauge user contentment. QE metrics enable data-driven decision-making, fostering continuous improvement.


In addition to the tools used in traditional QA, quality engineering emphasizes the use of** advanced analytics, machine learning, and automation** to predict defects, optimize testing efforts, and enhance the overall delivery.

QE Skills

Quality engineers require a deeper understanding of software architecture, design principles, and data analysis. They also need strong leadership and collaboration skills to drive quality practices across cross-functional teams.

QE meme

QE Certifications

Certifications like ASQ's Certified Quality Engineer (CQE) recognize professionals who possess a comprehensive understanding of quality engineering principles, methodologies, and practices.

Quality Engineering vs Quality Assurance

While both QA and QE share the common goal of delivering high-quality software, they differ in their approaches and scope. QA focuses on creating processes and guidelines, while QE extends its influence to the entire development lifecycle, leveraging data and advanced practices.

Quality Assurance (QA) refers to the systematic process of monitoring and evaluating various aspects of a product or process to ensure that it meets specified quality standards.

QA involves processes and activities that focus on ensuring that the final product meets customer requirements. It often involves defining quality standards, creating testing plans, conducting testing, and identifying and addressing issues before the product is released.

Quality Engineering (QE), on the other hand, goes beyond the traditional QA approach. Quality Engineering is a more proactive and holistic approach to quality of products.

It involves integrating quality principles and practices throughout the entire product development lifecycle, rather than just focusing on testing and bug prevention. Quality Engineering aims to optimize the development process itself to produce high-quality products with fewer bugs. It often involves collaborating with various teams, automating processes, using data analysis to identify potential issues, and continuously improving the development process to enhance overall quality.

Check more information on test automation for QA solutions from BugBug.


In the realm of software development, quality engineering and quality assurance are indispensable for delivering reliable and high-performing products. In essence, Quality Engineering encompasses a broader set of practices that involve both prevention and continuous improvement, whereas Quality Assurance tends to be more focused on verification and testing.

Both concepts are essential for delivering high-quality products, but Quality Engineering takes a more comprehensive and strategic approach to achieving that goal.


Is Quality Engineering the Same as Quality Assurance?

No, while related, they differ in scope and approach. QA focuses on processes, while QE integrates quality of the product.

What is the Difference Between QA and SQA?

Software Quality Assurance (SQA) is a subset of QA that specifically deals with ensuring the quality of the software development process.

Is a QA Engineer a Real Engineer?

Yes, QA engineers play a critical role in ensuring the quality and reliability of software products, making them real engineers.

Is a Quality Engineer a Tester?

While testing is a part of quality software engineering, quality engineers also focus on broader quality aspects and process improvements.

Is a QA Engineer a Tester or Developer?

QA analysts are primarily responsible for testing, but they may also engage in collaboration with developers to identify and resolve issues.

Do QA Engineers Do Manual Testing?

Yes, manual testing is often a part of QA, but automated testing is also a key component to improve efficiency.

Is QA Just Testing?

No, QA encompasses more than testing; it includes process improvement, adherence to standards, and defect prevention.

What Are the Two Types of QA Testing?

The two main types are functional testing (ensuring software meets specifications) and non-functional testing (verifying performance, security, etc.).

What Skills Should a QA Tester Have?

QA testers need skills in testing methodologies, technical understanding, communication, problem-solving, and attention to detail.

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Dominik Szahidewicz

Software Developer

Application Consultant working as a Tech Writer

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