Your question is Measure Success in a Campaign. 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).
How did you measure success in a campaign and why?
Describe how you would translate a campaign objective into a primary KPI, supporting metrics, and guardrails. Explain how you would establish a baseline, assess results against the objective, account for attribution limitations, and turn the findings into an actionable recommendation.