Google Optimize

Google Optimize is part of the Google Analytics 360 Suite, and the free version allows website owners to perform 5 tests simultaneously or using it as a means of personalization. Having said that, the free version does not allow to use Google Analytics segments so that onsite retargeting is impossible.

One of the main differences between Google Optimize and most of the other test tools out there is the use of Bayesian Inference in contrast to Frequentist methods; this will be further explained in the next section.