he online travel agency business over the last couple of decades has largely been built around selling hotel stays. But in 2019, there will undoubtedly be an acceleration of the drive to diversify their core businesses not only into apartments and vacation rentals, but also into tours and activities, restaurants, food delivery, and ridesharing.

As the online hotel booking business gets more competitive, with big chains pushing direct bookings, Google getting into the fray, and Airbnb throwing its weight around, you can look for online travel agencies to continue to point their businesses beyond hotels.