Marketing Efficiency Ratio (MER) measures revenue generated per dollar spent on ads. Essential metric for DTC profitability.

CAC payback period measures months to recover customer acquisition cost from gross margin. Essential cash flow metric for growth teams.

Predictive LTV forecasts customer lifetime value using machine learning models. Differs from historic LTV by projecting future revenue instead of measuring past spend.

RFM analysis segments customers by recency, frequency, and monetary value to identify high-value buyers and optimize retention spend.

Server-side tracking sends conversion data directly from your server to ad platforms, bypassing browser limits. Why pixels fail and how to implement it.