During what phase of DMAIC is sole purpose to demonstrate with fact and data that your solutions solve the problem?

The phase of DMAIC focused on demonstrating with facts and data that your solutions solve the problem is the "Improve" phase. In this stage, teams implement the identified solutions and collect data to assess their effectiveness. The goal is to ensure that the improvements lead to measurable results and address the root causes of the problem. This phase emphasizes validating the solutions through experimentation and analysis.