The PDCA Cycle is a system of continuous improvement in which a planning committee selects from a list of alternatives for improvement and moves to fully implement immediately the chosen improvement.

The PDCA Cycle is a system of continuous improvement in which a planning committee selects from a list of alternatives for improvement, implements a small-scale test of the chosen improvement (Plan), analyzes the results of the test (Do), uses the information gained to refine the improvement (Check), and finally implements the improved process on a larger scale (Act).