For the longest time, the only way you could stay overnight somewhere was in a hotel, motel, or friends/family’s house. But in 2008 Brian Chesky reimagined how you could do lodging by allowing people to use their homes to not only provide some extra income for the renter but also creating cheaper stays for the one renting.
Staying the night or multiple nights in a hotel is expensive and you can only have 2-4 people per room, but with Airbnb you can find homes that are substantially cheaper and can house as many people as you want.
I have used Airbnb many times and I’ve come to find that not only is it cheaper, the homes are usually just as nice as a hotel and you get total privacy! A company like Airbnb is super beneficial to both parties, allowing the renter to make money on a home they are not currently occupying and also providing a cheaper alternative for those looking to rent.