Conversion Optimization

Conversion optimization guides for growth marketers and product teams — A/B testing methodology, statistical significance, ROI calculation, and the experimentation discipline that separates real wins from noise.Read the A/B testing guide for test design and result interpretation, and the marketing ROI guide for ROI vs ROAS vs ROMI distinctions. Pair them with the A/B Test Calculator (uplift, confidence interval, p-value, Z-score) and the ROI Calculator (campaign cost vs revenue with visual gauge).Topics covered: sample size calculation, confidence-level selection, ROI formulas across attribution windows, and the methodological mistakes (peeking, low-traffic tests, no hypothesis) that cause confident-but-wrong conclusions.