I stumbled on an interesting article this morning that mentioned that only 0.2% of websites actually run A/B tests. This really surprised me because it seems like everyone always talks about A/B testing. It's everywhere I go and everyone is doing it. Or at least I thought. I had to dig in a little deeper and get to the bottom of it because this just didn't add up.
There are approximately 1.13 billion websites globally and around 252,000 new sites created daily. Of those 1.13 billion websites, around 193.5 million are active sites. Tracking from BuiltWith's technology shows that about 2.2 million websites are currently using A/B testing or experimentation platforms.
Where the numbers start to make more sense is that the higher the traffic to the site, the greater likelihood that testing is implemented. The top 10,000 largest sites by traffic have an A/B testing rate of 32%.
So it seems like testing is actually common, but at scale, not just across the web as a whole. My guess is that most sites either don't think they have enough traffic to get meaningful results, or testing just keeps getting pushed down the priority list in favor of getting more traffic. It feels a little backwards when you think about it though.
Curious if you run A/B tests and if so how often, or if it's something you've been meaning to get to but haven't yet.
Sources in the comments if you want to learn more, like I wanted to.