A/B testing, or "A/B split testing", is a method for testing two versions of a webpage: version "A" and version "B". The goal is to test multiple versions of webpages (e.g. home page, product page or FAQ) or one specific element that changes between variation A and variation B (such as having a lead form on the left-hand side or having it placed on the right-hand side), to determine which version is most appealing/effective. This testing method may also be known as "A/B/n split testing"; the "n" denoting more than 2 tests being measured and compared. The data for A/B testing is usually measured via click-through rate or an alternative conversion tracking method.