Another key concept of Software QA is the idea of continuous improvement represented by the Plan, Do, Check, Act principle:
- Plan: devise a plan, define the objective
- Do: execute the plan
- Check: check the results
- Act: take the necessary action based on results
This cycle then repeats in a continuous loop ensuring an on-going effort to improve the process.
When to Use Plan–Do–Check–Act:
- As a model for continuous improvement.
- When starting a new improvement project.
- When developing a new or improved design of a process, product or service.
- When defining a repetitive work process.
- When planning data collection and analysis in order to verify and prioritize problems or root causes.
- When implementing any change.
- Plan. Recognize an opportunity and plan a change.
- Do. Test the change. Carry out a small-scale study.
- Check. Review the test, analyze the results and identify what you’ve learned.
- Act. Take action based on what you learned in the study step: If the change did not work, go through the cycle again with a different plan. If you were successful, incorporate what you learned from the test into wider changes. Use what you learned to plan new improvements, beginning the cycle again.
click a link below for more information