PDCA (Plan-Do-Check-Action) MODEL/cycle is also known as PDSA ( Plan-Do-Study-Act), the "Deming Wheel," and "Shewhart Cycle". A PDCA cycle fosters the methodical, rigorous IMPLEMENTATION of solutions to problems. It is a four-step process that assists teams in avoiding recurring mistakes and improving development processes. In the same way that a circle is infinite, PDCA should be repeated indefinitely to improve continuously.

• Plan: The first step is to identify and understand your opportunity or problem, and then plan how to proceed. Planning takes a significant amount of your team's time, depending on the project's size. A proper plan usually consists of smaller steps so that there is a lower possibility of failure.
• Do: Once you have agreed on a plan, it is time to take action. In this step, you put into practice all the things you considered in the previous stage. At this stage, unforeseen problems can occur. In an ideal scenario, you should first test your plan on a small scale and in a controlled environment.
• Check: If you wish to develop a clear plan, avoid making the same mistakes, and use continuous improvement effectively, you should pay close attention to the check phase. You need to examine your plan's execution result and determine whether it was successful. MOREOVER,  your team will be capable of identifying problematic parts of the current process and eliminating them in the future. TRY experimenting with more changes, and repeat the Do and Check phases. If something goes wrong during the process, you need to figure out the problem's root cause. In any case, if your original plan doesn't work, you ought to start over with the planning phase.
• Act: The previous steps were to develop, apply, and check your plan. Now it's time to act. As long as everything appears to be WORKING well and your team was successful in achieving the original goals, you can proceed and implement your original plan. In this instance, your PDCA model becomes your new benchmark. Whenever you repeat a standardized plan, ask your team to go through all steps again and improve the care.