Airbnb is an online marketplace that allows people to rent out their homes, apartments, or other types of properties to travelers looking for temporary accommodations. The company was founded in 2008 and is headquartered in San Francisco, California.

Hosts can list their properties on the Airbnb website and set their own prices, availability, and house rules. Travelers can search for available properties based on their destination, travel dates, and desired amenities, and can book their accommodations directly through the website.

Airbnb has become a popular alternative to traditional hotels and has disrupted the hospitality industry. The company has expanded its offerings to include experiences and activities hosted by locals, as well as long-term rentals.

However, Airbnb has also faced criticism and regulatory challenges in some cities and countries due to concerns over the impact of short-term rentals on local housing markets, as well as safety and liability issues.