If you’re working on optimizing your conversion rate, chances are, you’ve already done some testing on your website. Maybe it’s A/B testing or multivariate testing, or maybe you’ve run a heat map or two. These are all tools available to you to deliver the best experience possible to your visitors. In this article we’re going to talk about another one, user testing: what it is, and how you can use it to come up with really good hypotheses for your experiments.