25 reactions | A/B testing is so common that many of us don’t even notice it. Whenever you pick up your phone, you’re likely becoming part of an A/B test, as sites and apps try to figure out what will get you to click, scroll, or download. But how does A/B testing work? And can it keep up with today’s complex online platforms? This short explainer video breaks it down. | Stanford Graduate School of Business | Facebook