The small but crucial difference is that Duolingo doesn’t use A/B testing–giving different users slightly different online experiences for the purpose of testing–to sell more consumer products or ...

A/B testing is nothing new. So why do so many businesses still fail to do it? Conducting online A/B and multivariate testing is nothing new. The practice has been around for decades now, with Google ...

How much of your digital strategy is based on things you know rather than things you think you know? As digital marketers, we like to think of ourselves as totally data-driven people -- but the truth ...

If you were going to send the first OkCupid message to a potential date, how many versions would you come up with? And how would you test to see which one was the best one? Fortunately, there is no ...

Now imagine doing any of these things on a smartphone. Chances are it would take several false starts and -- if you were dedicated to the goal -- a lot of struggle before the job was done. It has ...

A/B-testing should help you get better results—not waste your budget. But without structure or a clear hypothesis, it often becomes a series of tests of random changes. The key is to focus on the ...

Mark Sanderson receives funding from Microsoft Research and has previously received funding from Google. The market testing that helped give us the Google search we know today is being emulated by ...