As the PM for Ads in Facebook Reels, how would you measure success?

Focus on identifying key performance indicators (KPIs) that align with both user engagement and revenue generation for Facebook Reels. Consider metrics such as ad impressions, click-through rates, user retention, and overall engagement time on Reels. Discuss how you would segment data to understand performance across different demographics and ad formats. Additionally, think about qualitative measures, like user feedback on ad relevance and user experience, to provide a holistic view of success. Finally, outline how you would use these metrics to iterate on ad strategies and improve overall performance.