Booking Holdings spent $8.186 billion on marketing in 2025, up 12.5%, with the substantial majority flowing to Google. The same 10-K discloses AI trip planners, AI assistants, and an AI price comparison tool shipped into the product.
Booking.com is the most-visited travel website in the world. $23.7B revenue, 400M+ monthly visits, 19.6% Q1 2026 margin. What its marketing operating system actually does — and how the AI rebuild is reshaping it.
The 2024 "remove the watermark" advice is dead. DraftKings, Booking.com, and Airbnb run platform-native cross-platform production across TikTok, Instagram Reels, and YouTube Shorts. The five-step discipline that replaced TikTok-to-Reels repurposing.
Booking.com is the canonical case in search engine marketing at industrial scale. $5–7B annual paid search spend — the largest of any consumer brand. 1,000+ simultaneous A/B experiments. Category-level paid-search dominance in over 200 countries. The unit economics gate the model.
Three operating models drive Instagram sales — Airbnb's brand-led discovery funnel, Booking.com's performance marketing machine, and DraftKings's celebrity-and-promo conversion stack. What each does, what they share, and which fits which business.
Scientifically testing digital marketing strategies is one of the highest-leverage disciplines available to modern marketing teams. Booking.com runs 1,000+ simultaneous experiments. Netflix tests every thumbnail. Amazon, Google, Facebook operate at platform scale. What scientific testing actually means and what the leaders do differently.