There's no shortage of ways to measure the success of your conversion rate optimization (CRO) efforts. But one metric is more important than all the rest.
I know what you're thinking. Conversion rate is the most important CRO metric you should track, right? Duh? Seems like a no-brainer.
In my opinion, there's an even more important metric you should be paying attention to; Click-through rate (CTR) is THE most important conversion metric.
I’m not crazy. Here are three reasons why.