# A/B test

An experiment where live users are split between two versions of a product or service and the results are compared.

Also called: A/B testing, Split test, Online experiment

Kind of: Eval

Often confused with: Side-by-side eval

Related: Pilot

Source: https://redfinchadvisory.com/lexicon/a-b-test (version 1.0, changed 2026-10-21)