Started in 2008, Airbnb is the world's largest online alternative accommodation travel agency, also offering booking services for boutique hotels and experiences. Airbnb's platform offered 7.7 million active accommodation listings as of Dec. 31, 2023. Listings from the company's over 5 million hosts are spread over almost every country in the world. In 2023, 50% of revenue was from the North American region. Transaction fees for online bookings account for all its revenue.