We’ve written quite some posts on Conversion Rate Optimization and A/B testing on yoast.com in the last few years. However, we’ve never really touched the subject of multivariate testing. In this post I’ll explain what multivariate testing is, its pros and cons and when you should (and should not) be using it. What is multivariate testing? …Read: "Multivariate testing: what it is and when to use it"