PDCA stands for Plan-Do-Check-Act. It can also stand for Plan-Do-Check-Adjust or Plan-Do-Study-Act. Plan: Plan or outline a problem. Create a process improvement plan. Do: Do or apply countermeasure to address root cause. Execute a process improvement plan. Check: Check or assess if the problem is fixed. Inspect feedback and adjust the plan accordingly. Act: Adjust or fine tune the fix. Integrate a process improvement plan into the system. https://goleansixsigma.com/lean-six-sigma-pdca-infographic/ https://goleansixsigma.com/pdca-pdsa/