Driving Quality Assurance with PDCA: A Tester’s Guide

Driving Quality Assurance with PDCA: A Tester's Guide

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Quality assurance plays a crucial role in ensuring that software meets the highest standards of functionality, performance, and user experience. As a tester, it is essential to understand and implement effective quality assurance strategies. We try to implement many techniques and methodologies to ensure quality. In this Agile environment, we must adapt and embrace continuous improvement to meet the business objectives.

For continuous improvement, learn and search for new ways to improve our testing skills. One such strategy that can significantly improve the testing process is the Plan-Do-Check-Act (PDCA) cycle. In this blog post, we will explore the details of PDCA and how testers can utilize the PDCA cycle to drive quality assurance and deliver exceptional software.

Detailed Overview – PDCA Cycle

PDCA Cycle

What’s the PDCA Cycle?

PDCA stands for Plan-Do-Check-Act, and it is a continuous process used in business management for continuous improvement. It is a four-stage cycle that enables organizations to continuously improve their processes and systems by testing new ideas or plans, observing their effects, analyzing the results, and then acting upon the insights gained. By repeating this process, teams can constantly make improvements that have an overall positive effect on the organization.

Origin of PDCA Cycle

Walter Shewhart, The Grandfather of Total Quality Management is considered the father of the PDCA Cycle.

He defined the continuous process improvement in terms of the PDCA Cycle. He listed the three different steps:

  1. Specification
  2. Production and
  3. Inspection

Later, inspired by this model, W. Edwards Deming, an American quality assurance statistician developed the PDCA Cycle.

It was first presented as a tool for helping people improve processes and systems in 1950. Since then, the framework has been used by businesses and organizations around the world to create quality control systems, ensure greater efficiency, and reduce the risk of failure when undertaking projects.

Different stages under the PDCA Cycle

1. Plan

This is the first stage in the PDCA Cycle, where you establish the objectives, identify an opportunity for improvement, and formulate a plan of action to address it. This plan should include specific objectives, plans, schedules, and other details to guide implementation. This is more of a brainstorming and strategizing.

2. Do

In this stage, you carry out your plan and make the necessary changes. This is where you collect data that will help you identify any problems and ensure that the process works as expected.

3. Check

Once the changes have been implemented, the third stage of the cycle involves monitoring and measuring the results to determine if they have had the desired effect. This stage involves analyzing the data, and comparing it to the objectives you set out in the planning phase.

4. Act

In the final stage, you use the insights gained from the check stage to make adjustments or corrections as needed. This “act” stage of the PDCA cycle allows you to adjust your plan, revise processes or policies, or brainstorm additional ideas. Once you’ve made the necessary changes, you go back to the Plan stage to start the cycle again.

By following this iterative PDCA cycle repeatedly throughout a project’s lifecycle or within an organization’s processes, teams can continuously improve their performance and enhance overall quality assurance efforts.

Now, let’s see in detail how these stages could help different phases of testing. 

Understanding the PDCA Cycle and Software Testing

Planning Phase

The first step in the PDCA cycle is to plan your testing activities. This is the phase where you can start asking more questions and deriving the objective or the goal. 

A few of the questions could be like this:

  • What is the purpose of the application?
  • How can it be tested efficiently? 
  • What are the factors to be considered in testing?
  • Who are the real users of the application?
  • What are the key areas of the application?
  • Are there any upstream and downstream systems that affect the application?
  • Do we need to coordinate with any external team?
  • Should we consider any security concerns?
  • What is the non-functional testing to be focussed on?
  • Do we have a clear understanding of the requirements?
  • What are the risks associated with the project?
  • Are we planning to do some exploratory testing?
  • Are we planning for Automation Testing? If so what are the areas?
  • What are the tools to be used for testing?

This involves setting clear objectives, defining test scenarios, and establishing a comprehensive test plan. It’s important to collaborate with stakeholders and gather their requirements to ensure that the testing process aligns with their expectations. Work on the estimation and resourcing. By carefully planning your testing approach, you can save valuable time and resources in the long run.

Doing Phase

The “Do” phase is where the actual testing takes place. Make sure that the test environment is set up and data preparation is performed. Testers execute the test scenarios and test cases outlined in the test plan and closely monitor the application or website’s behavior. It’s crucial to keep detailed records of the test results, including any defects or issues encountered during testing. By documenting the test findings, you can provide valuable feedback to the development team and facilitate the resolution of identified issues. Proper documentation during this phase can help avoid unnecessary rework and speed up. Also, discuss and derive processes on how to effectively track and manage defects. 

Checking Phase

Once the testing is complete, the “Check” phase begins. After a deeper planning and execution phase, we need to have a stop and check on a few things. We need to make sure that our testing is proceeding in the right direction. 

Testers analyze the test results and compare them against the expected outcomes. This step involves identifying any discrepancies or deviations from the expected behavior. By conducting thorough checks, testers can identify areas that need improvement and take necessary corrective actions. So invest time in preparing metrics and KPIs to measure the testing progress and quality. Also, we can implement tools to track the progress of the testing effort. Peer review and continuous evaluation of the test cases are also good practices to ensure the quality of the product or application.

Acting Phase

After an iteration of execution, we have the steps to move forward. 

The final phase, “Act,” focuses on implementing corrective actions based on the findings from the previous steps. Many actions can be taken to improve the overall process. Few examples below:

  • Collaborate with the development team to address the identified issues and make the necessary improvements. 
  • Prioritize the topics based on their severity and impact on the overall software quality. 
  • Take corrective action to fix the defects and prevent them from recurring.
  • Use the metrics and KPIs to understand the system better
  • Work on the retrospection and best practices
  • Incorporate lessons learned
  • Be honest with the progress made and the plans for the future

Taking prompt and appropriate actions, testers can drive continuous improvement and enhance the software’s overall quality.

Benefits of PDCA for Testers

Implementing the PDCA cycle in the testing process offers several benefits for testers:

  • Improved Efficiency: The PDCA cycle helps testers plan, perform, assess, and improve their testing efforts in a methodical manner. This guarantees that testing efforts are organized and concentrated, resulting in greater efficiency.
  • Improved Test Coverage: Analysing and documenting test coverage with PDCA helps testers have a better understanding of their test coverage and can improve it as needed.
  • Enhanced Collaboration: Testers may create greater cooperation throughout the testing process by incorporating stakeholders and strongly seeking their advice. It is critical to foster a collaborative environment among testers and developers. Promoting open communication, information sharing, and cooperation may lead to a better grasp of project requirements, faster bug discoveries, and more effective problem-solving. This collaborative method guarantees that both sides collaborate to accomplish similar objectives.
  • Continuous Improvement: Within the testing team, the PDCA cycle fosters a culture of continual improvement. Testers can discover areas for improvement and apply ways to foster continuous improvement through regular reviews and remedial measures.
  • Increased Software Quality: Following the PDCA cycle allows testers to successfully discover and resolve defects, hence enhancing the overall quality of the product. By continually assessing and refining testing methods, testers may provide high-quality output with fewer mistakes and anomalies. This increases customer satisfaction and lowers the likelihood of post-production issues.
  • Reduced Resources: By iterating and refining test plans, testers can save time and effort spent on rework or bug fixes. This makes PDCA an invaluable process for software testing.

Tips for Effective Implementation of PDCA in Software Testing Projects

To effectively implement PDCA, it is important to foster a collaborative approach among testers and developers and conduct regular reviews and feedback sessions.

A few tips which can be helpful for you are:

Conduct regular reviews and feedback sessions: Periodic reviews enable teams to analyze project progress, identify gaps or difficulties, and take remedial action as needed. Feedback sessions allow testers and developers to share their observations, discuss ideas, quickly resolve problems, and make required changes to enhance the overall quality of the application being tested.

Involve Multiple People in the Development and Execution of PDCA: To guarantee the successful and effective adoption of PDCA in software testing, individuals from multiple teams, such as developers, testers, product owners, scrum masters, and project managers, must be involved in the formulation and execution of PDCA. This will guarantee that all stakeholders agree on the project’s goals and strategy, as well as that all activities are carried out appropriately.

Use Automation Tools and Techniques: Because the PDCA approach necessitates continuous revisions to plans and processes, it is critical to employ automation tools and methods such as automated software testing tools, version control systems, and communication platforms to assure consistency. This will also aid in completing the project on schedule and within budget.

Track the Progress and Analyze the Results: It is critical to evaluate progress and analyze findings on a frequent basis to verify that the PDCA methodology’s objectives are satisfied. This will help in identifying any possible areas for improvement or concerns that must be addressed.

Document the Process: As PDCA is an iterative process, it is critical to document each phase of the process and ensure that each step is carried out correctly. The process documentation will also act as a reference point for future initiatives.

Train the Team: Because PDCA is a process-centric approach, it is critical to ensure that the team is thoroughly trained and comfortable with the PDCA methodology before implementing it. 

Pitfalls to Avoid When Applying PDCA to Software Testing Practices

To ensure effective software testing efforts, it is important to apply the Plan-Do-Check-Act (PDCA) cycle. However, there are several pitfalls that organizations and teams should be aware of and avoid when implementing PDCA in software testing.

Poorly defined objectives: It is impossible to monitor progress and establish whether testing activities are successful without defined and explicit goals. It is critical for organizations to explicitly state their goals for testing, whether it is to improve software quality, uncover defects, or validate functionality.

Lack of documentation: Documentation is essential in software testing because it captures key information regarding test cases, test results, and any difficulties that arise throughout the process. It becomes difficult to track progress, recreate errors, and exchange information with team members without sufficient documentation.

Relying too much on the “Do” phase: Many test teams using PDCA may place too much emphasis on the “Do” phase, which may be an exciting and productive element of the cycle. However, doing so can result in restricted and inefficient testing, as well as a failure to thoroughly analyze the long-term consequences of decisions made.

Not focusing enough on the “Check” phase: The “Check” step of PDCA is arguably the most critical. It is impossible to learn from mistakes and make changes unless the results of testing are thoroughly examined.

Missing to capture lessons learned: Previous testing cycles‘ lessons might give significant insights into what went well and what didn’t. Organizations may constantly improve their procedures and outcomes by documenting these lessons gained and applying them to future testing efforts.

In conclusion, organizations should be mindful of these pitfalls when applying PDCA to their software testing efforts. By avoiding these pitfalls and implementing an effective PDCA cycle, organizations can enhance the quality of their software through systematic planning, execution, evaluation, and continuous improvement.

Conclusion: Enhance QA Practices with PDCA to Drive Quality Assurance


Quality assurance is an important element of software development, and testers are essential in ensuring that software fulfills user expectations. Testers may drive quality assurance and deliver outstanding applications by following the PDCA cycle. The systematic process of planning, executing, reviewing, and improving assists testers in streamlining their testing activities and enhancing collaboration with stakeholders. Finally, testers may contribute to continuous improvement and create high-quality software products by employing the PDCA cycle.

Organizations may aim for excellence in their goods or services while encouraging a culture of continuous improvement by embracing this methodical strategy of planning-doing-checking-acting.

Finally, the PDCA cycle is a useful framework for software testing teams aiming to improve their testing methods and techniques. Software testers may detect defects, increase test coverage, and encourage continuous improvement by following the phases of the PDCA cycle – Plan, Do, Check, Act.

Incorporating the PDCA cycle into the testing process can result in more efficient and effective testing practices, which can lead to higher-quality software products. So, why not give it a shot and see what a difference it might make in your testing efforts?

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