“According to research by Evercore Group L.L.C., Booking.com’s “testing drives conversions across the whole platform at 2–3 times the industry average.” That means massive increases to their revenue and bottom line.”How Booking.com A/B Tests Ten Novenonagintillion Versions of its Site https://blog.usejournal.com/how-booking-com-a-b-tests-ten-novenonagintillion-versions-of-its-site-25fc3a9e875b via Instapaper
Source: How Booking.com A/B Tests Ten Novenonagintillion Versions of its Site