Software Quality Assurance: The Backbone of Business Resilience
Julia Teryokhina, Senior Presales Engineering Manager
September 4, 2024
Software Quality Assurance serves as a critical foundation for building premium software solutions and efficient development operations. QA practices that maintain high standards lead to reduced bugs and improved performance which results in more satisfied users.
A 2022 report by CISQ revealed staggering statistics: Inefficiencies and software glitches forced U.S. companies to lose $2.41 trillion because of poor software quality. That’s a lot of zeros!
The total software technical debt now stands at roughly $1.52 trillion which demands immediate implementation of strong QA practices. The implementation of effective quality control measures can drastically cut these costs which demonstrates why organizations must prioritize QA investments from the start. Early bug detection saves money while late discovery incurs higher expenses.
QA outsourcing services perform much more than software testing alone. The activities it includes cover multiple dimensions that ensure software fulfills particular standards and requirements which produce superior products. Software quality assurance works to stop defects before they emerge through proactive strategies whereas testing identifies defects already present in the software.
The complete methodology encompasses planning quality measures while maintaining control over them through assurance and continuous improvement for every development stage.
Key principles of software testing and quality assurance
1. Quality begins with specification
Successful software development begins with precise requirements documentation which must remain consistent and testable while being achievable within both time and budget restrictions. This first step establishes the groundwork for future quality control activities while avoiding later misunderstandings and errors and eliminating rushed work or overtime needs.
2. Software quality control throughout the development lifecycle
Enhancing software quality management involves more than just reviewing specifications. It includes key practices such as:
- Test-Driven Development (TDD), where tests are created before writing code to ensure reliability and reduce errors.
- Behavior-Driven Development (BDD) extends TDD by emphasizing natural language scenarios and examples, fostering better understanding and communication between non-technical stakeholders and the engineering team.
- Code reviews, where peers check each other’s code for quality and share knowledge.
- Technical debt control, focusing on continuously improving code to prevent future issues.
- Security testing to identify and fix vulnerabilities, safeguarding against cyber threats.
- Performance testing, which includes load testing to assess response under heavy user traffic and stress testing to evaluate limits and endurance.
- Usability testing, starting from the UI design phase and continuing through user acceptance testing.
- Constant monitoring of software availability in production and optimizing where necessary to maintain or improve efficiency.
- Reviewing user feedback and incorporating necessary improvements to enhance user experience and satisfaction.
Adopting these practices, collectively forming Quality Driven Development (QDD), requires significant effort for both execution and ongoing improvement. Integrating various AI assistants into these processes can help automate tasks, provide insights, and enhance overall quality control efforts effectively.
3. CI/CD for software quality assurance
Software quality reaches new heights and timely QA feedback becomes accessible through the implementation of Continuous Integration and Continuous Delivery (CI/CD). CI/CD enables automatic processes for integration, testing, and deployment which leads to thorough testing procedures as well as effective updates.
By embedding testing frameworks into CI/CD pipelines organizations can automatically perform regression tests while managing technical debt. Development processes become more efficient while software quality standards remain consistent and independent validation happens automatically. CI/CD pipelines provide the capability to generate notifications alongside comprehensive QA reports which adhere to predetermined criteria.
Performance testing produces alerts when response times become excessive while security testing discovers and reports software vulnerabilities. Teams gain the ability to solve issues ahead of time through these insights which enables them to focus more on innovation instead of traditional testing and reporting.
4. Employee professional development
Software development teams must maintain their market position by regularly improving their expertise through obtaining certifications and continuous learning. A fully functional product delivery falls short without the insights gained from industry standards and trends which are essential for developing continuous quality improvement strategies. Specialists in the QA role must find equilibrium between quality assurance, meeting deadlines and managing costs to ensure effective software quality control.
5. Independent QA teams
Dedicated QA teams operate independently from engineering groups to exclusively focus on quality maintenance through specification reviews and audit testing procedures. External quality assurance experts enhance software products to superior levels while preserving neutrality and keeping excellence as their main objective.
The combination of these practices creates a framework known as quality driven development (QDD).
QDD benefits
Quality driven development offers significant advantages by prioritizing rigorous software testing and quality assurance practices. Here they are:
- Enhanced quality via comprehensive testing methods and proactive software quality management throughout the development process.
- Early detection and resolution of issues with techniques like TDD and BDD, which prevent costly fixes later on.
- Continuous improvement achieved by implementing and automating best practices.
- Closer collaboration between QA teams and developers ensures that software meets customer requirements.
- Strengthened security and better performance achieved through automated security and load testing, protecting software from cyber threats and vulnerabilities.
- User retention is boosted by delivering an attractive, high-standard product. Studies indicate that users are less loyal to software with bugs; more than half would abandon an app if they encountered significant issues in a day. Therefore, high-quality software not only builds a strong brand but also retains and expands the user base.
Thus, quality driven development results in reliable and competitive software products.
QDD risks
Quality driven development poses several risks that organizations must consider:
- Increased development time due to meticulous testing and code reviews. Additionally, maintaining high-quality documentation demands extra effort.
- Higher initial costs from investing in specific tools for automated testing and QA analysis. Continuous team education on QDD practices also adds to expenses.
- Potential overhead, as the focus on quality may not always justify the investment. This also correlates with the risk of over-engineering, leading to unnecessary features and costly, overly sophisticated solutions.
- Resistance to change among team members and stakeholders, requiring persuasion of the long-term benefits.
- Measurement challenges in quantifying quality, as assessments are often subjective.
- Adherence to QA standards among external teams may be complicated if the company turns to outsourcing. To achieve effective coordination, robust communication is essential.
Despite all these risks, a proper development approach promises long-term benefits, such as enhanced software quality and reduced technical debt. Still, organizations can harness QDD effectively with the help of strategic planning and effective management.
Employing AI tools to ensure quality
The integration of AI tools in software quality management has revolutionized QA functions by enhancing efficiency throughout software development processes. Intelligent assistants find application in virtually all tasks which dramatically speeds up the release process.
1. Better project planning
Through AI technology ClickUp Brain transforms task prioritization by identifying potential risks through analysis of historical project data. Through its smart recommendations and insights teams can allocate resources efficiently and streamline workflows which results in smoother project execution
2. Creating robust specifications
Utilize IBM DOORS Next or ReqSuite® RM to manage your documentation needs. The AI modules embedded in these tools perform functions to track requirements and manage change requests while also preventing scope creep. Their intuitive web-based interfaces allow for simultaneous collaboration which enables technical team members and diverse stakeholders to work together without interruption.
3. Crafting exceptional UI/UX designs
Figma emerges as an excellent choice due to its AI features that boost both productivity and creativity. These features encompass the ability to generate ideas and explore multiple design approaches while automating repetitive tasks and detecting usability concerns before validating decisions according to industry standards.
4. Enhancing architecture quality
Ardoq serves as your solution for proven software architecture. The AI capabilities of Ardoq optimize modeling processes while supplying expert best practice advice and generating custom visualizations. Ardoq offers AI-driven enterprise architecture design tools and helps organizations locate, document and assess AI projects within their operations.
5. Improving code quality
DeepCode offers AI-powered machine learning tools to enhance your code quality. This software examines source code to find problems and inefficiencies while providing automated review suggestions based on global standards and live risk evaluations. The tool delivers security and contextual recommendations while learning from developer interactions to enhance its insights and help teams maintain strong codebases.
6. Generating unit tests automatically
Beyond well-known GitHub Copilot, try using one of these AI tools tailored to specific programming languages: Developers can utilize Diffblue Cover to generate unit tests for Java and Kotlin programs or DeepUnit.ai for creating unit tests in TypeScript projects.
7. Streamlining testing processes
To optimize testing approach, leverage one of the following AI-powered platforms: Testim applies artificial intelligence to develop and maintain automated tests while spotting potential issues in advance of production deployment.
8. Enhancing the quality of support services
Finally, your application is released to production! After releasing your application to production you should implement New Relic because it delivers AI-driven observability across applications and infrastructure while managing logs. Use Qualtrics or Medallia to process user feedback in order to gain insights about user satisfaction levels and areas that need enhancement.
The QA process receives substantial enhancements through the integration of AI tools into software quality management systems. By employing artificial intelligence at every stage of development—from project planning to processing user feedback—organizations can ensure higher quality, improved efficiency, and better user satisfaction.
Software quality metrics
Quality measurement presents substantial difficulty because it demands complex quantification methods. The following software metrics are worth considering. Regular calculation of these metrics with KPIs for the team will give you a sense of assurance.
Metric | Description |
Defects per requirement, or defect density | Measures how many defects are discovered per requirement during testing, indicating their risk level for release. It helps teams prioritize improvements to testing strategies and decide on the deployability of each requirement based on its defect count. |
Bugs found vs. bugs fixed | Evaluates QA effectiveness by comparing discovered bugs to resolved ones, offering insights into defect management and testing progress.
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Defect resolution percentage | Measures the efficiency of the development team in analyzing and fixing bugs reported by QA teams. By tracking the ratio of defects fixed to those reported, this metric can help explain delays in shipping and is particularly useful in discussions with management.
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Fix quality (or defective fixes %) | Evaluates the effectiveness of fixes in maintaining software reliability, crucial for ensuring customer satisfaction in critical systems. It quantifies defective fixes as a percentage of all fixes within a given period, aiming for zero defective fixes within the analyzed period.
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Cost per bug fix | Represents the amount spent to fix each bug, calculated as the time taken to fix the bug multiplied by the developer's hourly rate. For a more comprehensive figure, you can also include the cost of testing each bug fix in the final reporting.
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Defect age | Measures the average time taken to fix a defect, calculated from the time of bug creation to its resolution, typically measured in days. A progressively low Defect Age indicates maturing QA processes, as bugs are resolved more quickly with each test cycle.
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Number of reopenings | Tracks how often a particular task or bug is reopened, even if it happens across different builds or releases. Frequent reopenings indicate system instability, architectural design issues, and low code quality. |
Defect distribution over time | Charts the number and origin of defects at the end of each test cycle, showing the development team's progress in identifying and resolving bugs. Categorizing defects by cause, module, severity, or platform helps pinpoint areas needing more attention, making it easier to identify and address recurring issues in specific categories. |
Fix backlog and Backlog Management Index (BMI) | The Fix Backlog metric tracks the rate of defect arrivals against the rate at which fixes for reported problems are made available. It measures the count of unresolved problems at the end of each month or week. The Backlog Management Index (BMI) helps manage this backlog, indicating backlog reduction when BMI is greater than 100 and an increase when BMI is less than 100. |
Escaped bugs | Measures post-release software issues reported by customers, indicating QA effectiveness. Minimizing these bugs ensures smoother user experiences and fewer post-launch interruptions. |
Mean time to failure | Measures the average time between system failures, commonly used in safety-critical systems such as air traffic control, avionics, and weaponry. This metric helps assess the reliability and performance of systems where failure can have severe consequences. |
Customer problems | Measures the issues customers encounter while using the product, including both defect-oriented and non-defect problems, from the customer's perspective. This metric is usually expressed as Problems per User-Month (PUM), calculated by dividing the total problems reported by customers over a time period by the total number of license-months of the software during that period.
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References
- Cost Of Poor Software Quality In The U.S.: A 2022 Report. The Consortium for Information & Software Quality™ (CISQ™), 2022.
- One AI to replace them all. ClickUp, 2024.
- IBM Engineering Requirements Management. IBM, 2024
- The Smart Tool for Your Requirements Management. OSSENO Software GmbH, 2024.
- Your creativity, unblocked with Figma AI. Figma, 2024.
- AI and innovation: Faster. Smarter. Better. Ardoq, 2024.
- Snyk powered by DeepCode AI. Snyk Limited, 2024.
- Accelerate development with AI unit test generation. Diffblue Ltd., 2024.
- DeepUnit. The Outpost, 2024.
- The #1 AI-Native Test Automation Platform. Mabl Inc., 2024.
- Move faster and reduce costs with the power of AI. Testim, 2024.
- The All-In-One Next Generation AI-Powered Testing Platform. Applitools, 2024.
- New Relic AI. New Relic, 2024.
- Qualtrics Unveils Groundbreaking AI Innovations to Transform Understanding of Customers, Employees, and Prospects. Qualtrics, 2024.
- Uncover meaningful insights from every interaction. Medallia Inc., 2024.