Describe one professional accomplishment you are most proud of from the past two years. Make it audit-ready by covering: goal, measurable target, constraints (budget, time, headcount), your specific role and decision rights, key stakeholders and how you aligned them, the top two risks/tradeoffs you considered, and the plan you executed. Quantify impact precisely (absolute and relative change, revenue or cost, confidence/uncertainty where relevant, timeline from start to measurable outcome). Provide a counterfactual estimate of what would likely have happened without your intervention and how you validated that estimate. Finally, explain how you responded when an executive challenged the cost or scope, what you would do differently with 50% less budget, and the leading indicators you monitored to ensure sustained effect.