A/B testing is around for a long time, yet a surprisingly small amount of companies do it. People will spend days deciding on what the main front page banner should say, but when they do decide, they never bother to check whether they were right. At our Drupal agency, we say test it! We do and we get great results. What is A/B testing A/B testing is a practice of displaying different things to separate groups of users and measuring what works better.