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 6 million active accommodation listings in 2021. Listings from the company's 4 million hosts are spread over 220 countries and 100,000 cities and towns. In 2021, 54% of revenue was from the North American region, 32% from Europe/Middle East/Africa, 7% from Asia-Pacific, and 7% from Latin America. Transaction fees for online bookings account for all its revenue.