Control (DMAIC Phase)

Final phase of Six Sigma DMAIC focused on sustaining improvements through control plans, statistical process control, and standardization. Includes updated procedures, training, mistake-proofing (poka-yoke), and ongoing monitoring with control charts. Prevents backsliding to old performance levels. Answers 'How do we maintain the gains?' Similar to A3 Follow-up Actions and Standardization but with more emphasis on statistical monitoring and documentation. Projects aren't considered complete until controls are in place and validated over time.