Stop guessing – start testing!

Just read this incredibly clear guide on AB testing UI and had to share. We've all been in those meetings debating button colors or layout changes based on opinions. But real AB testing lets the data decide what actually works for users. This isn't just about which shade of blue performs better – it's about systematically improving your interface through measurable experiments. The guide walks through everything from setting up proper hypotheses and choosing what to test, to interpreting results and avoiding common pitfalls. If you're designing digital products, this is essential reading. Time to move from "I think" to "I know"!