Have to give a big shout out to Optomizely. Optomizely is an amazing tool that make a/b testing so easy, maybe too easy, for the fact that you want to just go ahead and start A/B testing everything your site!!!
I really liked super easy web editor that allows you to adjust elements on the page right in the browser, with any need to download / upload files to the server.
All you need to initiate Optomizely is to insert the .js code in to the top of head tag on your .phtml file.
The HTML Editor in Optomizely is amazing and I wish they would put out the editor as a standalone tool for editing pages on the fly.
Heres’s an of the variations of test setup on my initial tests:
This is our original page, as is.