Six Sigma's DMADV Process $($define$,$ measure, analyze, design and verify$)$ is a particularly good tool for:

Achieving $100\%$ control over how a task is performed and eliminating $100\%$ of the variability in how a task is performed

Improving performance when there are small variations in how to perform an activity. If there are wide variations, then other Six Sigma processes need to be used

Improving performance when there are wide variations in how well an activity is performed

Improving customer satisfaction, whereas Six Sigma improves manufacturing processes

Developing new processes or products at the Six Sigma level of standards