In car rental, an affiliate is a company that only advertises the offers of a car rental broker or a supplier on their website and doesn’t mediate the offers itself. They direct the customer to the broker’s or supplier’s website to finish making the booking. In exchange, they receive a commission on bookings made by these customers.

Comparison sites are an important group of affiliates. These sites compare the rental prices of different car rental brokers. The client can choose the offer that suits them and they are directed to the broker’s website. Online Travel Agencies are also affiliates who direct customers to the service provider’s website.