Anyone has a recommendation of tool to do split testings?
The ones I found are usually pretty expensive when the amount of traffic increases, so I am thinking that I shall do my own library to serve them.
How do you do it?
Google Optimize is free up to a certain point. What kind of functionalities are you looking for?
Google Optimize all the way.
The only thing I haven't been able to split test with it, is javascript (but you can still A/B the entire URL instead of just modifying the page within Optimize)
Google support platform and youtube channel give quite a lot of info to start
https://optimize.google.com/optimize/home/#/accounts
Simoahava.com has several guides more advanced, notably on the impact of the flickering effect, as well as the anti-flickering Google script, which hides the page and can impact performance.
https://www.google.com/amp/s/www.sim...et-delay-test/
https://www.simoahava.com/amp/analyt...licker-impact/