A/B testing, at its most basic, is the process of comparing two versions of something (product, [[service]], [[design]], etc.) and measuring the difference in performance. Two versions (A and B) of a single variable are compared, which are identical except for one variation that might affect a user's [[behavior]]. After you create your variations, you give one version to one group and the other version to the other group. Then you can see if [[behavior]] changed between the two groups.