Move beyond raw signups to qualified leads, verified identities, and first-value actions like initial deposit, card activation, or first transaction. Track cohort-based activation within defined windows, and connect early behaviors to lifetime value using retention curves. Calibrate paid media KPIs with blended CAC, payback period by channel, and incrementality tests, ensuring sustainable growth rather than vanity-driven spikes that erode unit economics.
Define engagement with clear leading indicators: active days, funded balances, transaction frequency, and feature depth. Retention must be cohortized and segmented by acquisition source, product mix, and risk level. Tie monetization to ARPU, take rate, net interchange, and cross-sell penetration, avoiding averages that hide mix shifts. Use survival analysis for churn prediction and forecast LTV distributions with scenario bands for credible planning.