It’s no secret that split (A/B) testing is an essential part of a successful AdWords campaign.
I’m a big advocate of scientific testing, and it is a core part of how my company, Brainlabs, approaches paid search campaigns.
Some time ago, I shared our A/B testing script, which enables you to set up control and experiment campaigns that are alternately paused and resumed, and then emails you when the test has significant results for click-through rate (CTR) or conversion rate (CR).
However, there’s no point in running tests if you don’t know how to interpret the results. That’s why we made our Rotating Ad Copy script, which helps you choose which ads from your test have the best performance.