Variant performance history

Every variant in your snippet library has a performance history that accumulates across campaigns.

What is tracked

For each variant, liftstack records the number of exposures, engagement metrics (open, click, conversion, revenue per exposure), the win/loss record across campaigns, and the overall probability of being the best variant based on all accumulated data.

Using performance history

Performance history helps you make better decisions about which variants to include in future campaigns. A variant that has won 4 out of 5 campaigns is a strong candidate for continued use. A variant that has never won after sufficient exposure can be retired and replaced with a new approach.

Cross-campaign confidence

Individual campaign verdicts may have moderate confidence (e.g., 75%). But when you combine data from multiple campaigns, confidence increases. A variant that shows a consistent 0.3% conversion rate improvement across five campaigns is a much stronger signal than a single campaign with 90% confidence.