A/B testimine on protsess, mille käigus näidatakse sama veebisaidi kahte varianti veebisaidi külastajate erinevatele segmentidele korraga ja võrreldakse, milline variant toob rohkem oodatuid tulemusi.

A/B testing is a process of showing two variants of the same web page to different segments of website visitors at the same time and comparing which variant drives more expected results.