Yeah, they're all about A/B testing, not automated testing. The article shows what you get when you laser focus on CRO. They do very well though, and are probably the top hotel booking site? Definitely a lesson in there somewhere.
I'd contend they're a top booking site because of the wide variety of hotels available, not because of the CRO. I'd look for the team that goes and signs hotels up to the platform, they seem to be doing a really good job in all territories.
