Your question is Validate Process Improvement Impact. Take a moment with it on the right.
Talk me through your thinking if you like. When you're confident, submit your answer and I'll grade it like a real screen (7/10 or better passes).
You've changed an engineering process and want to know whether it actually made the team better. The change may affect speed and quality on different timelines, so a single headline metric can give the wrong read.
How do you know if a process improvement actually improved quality or throughput?