![The State of Statistical SEO Split-Testing in 2021 [Research]](https://static.semrush.com/blog/uploads/media/4c/b6/4cb6e791cf08ebd1a9bc21009df708ae/state-of-statistical-seo-split-testing.svg)
The word “split-testing” isn‘t alien to most marketing departments. Email marketers use it to test subject lines; designers use it to see which page layout influences people to buy.
SEO teams, on the other hand, don’t seem to be using split-testing to its full potential. Why?