Booking Holdings Inc. (NASDAQ: BKNG) is perhaps the best OTA that I've looked into so far. It focuses on an agency business model, which differentiates it from most other OTAs. In the agency model companies only charge a commission, unlike the merchant model that requires a payment processing structure and customer service support. This allows BKNG to focus on operational efficiencies that translate into better margins and higher customer satisfaction. Consequently, BKNG can enter and expand into foreign markets due to its scale and data mining advantages for metasearch. Also, management has been successful