ELI5: Explain Like I'm 5

Test and Learn

Test and learn is all about testing out new things to figure out the best solution. For example, let's say you have a website that you want to make better: test and learn helps you figure out how to do that. You can test out different designs and layouts and see which ones your visitors like best. You can also test new features and see how well they perform. All of this testing helps you learn what changes will make your website the best.