DoorDash

DoorDash is an on-demand restaurant delivery service founded in 2013 by Stanford students Andy Fang, Stanley Tang, Tony Xu and Evan Moore. A Y Combinator-backed company, DoorDash is one of several technology companies that uses logistics services to offer food delivery from restaurants on-demand. DoorDash launched in San Francisco and has since expanded to 42 markets and more than 500 cities across North America. 
Doordash experienced exponential growth with the implementation of a Doordash referral code program, where existing customers have the ability to refer others in exchange for Doordash credits.
DoorDash is a technology company that connects people with the best in their cities. We do this by empowering local businesses and in turn, generate new ways for people to earn, work and live. We started by facilitating door-to-door delivery, but we see this as just the beginning of connecting people with possibility — easier evenings, happier days, bigger savings accounts, wider nets and stronger communities.