W. Edwards Deming

The acronym PDCA stands for "Plan-Do-Check-Act". It is a four-step problem-solving process that is normally used in business process improvement. It can also be known as PDSA which stands for "Plan-Do-Study-Act"

4. Plan, Do, Check & Act. Each of these has numerous sub processes in them

The Deming Cycle or PDCA Cycle was introduced by W. Edwards Deming as a method for quality improvement. If processes are in place, they can be measured. Changes can be made to those process and the impact of the changes assessed via further measurement. This enables ongoing measurable improvement.

PDCA (Plan-Do-Check-Act) is a system for continuous improvement in total quality management. It involves planning a change, implementing it, checking the results, and acting on the feedback to make improvements. This iterative process helps organizations identify opportunities for improvement and continuously enhance their quality management system.