DoorDash

DoorDash operates a local commerce marketplace connecting consumers with restaurants, grocery stores and retailers. Merchants use its services for delivery, pickup and their own online stores. Ask DoorDash adds conversational discovery: customers can describe a meal or turn recipe links and cookbook photos into grocery carts. At its 2026 introduction, restaurant search and grocery shopping were available in select areas on iOS.

Founded in 2013, DoorDash’s founders include CEO Tony Xu, Andy Fang and Stanley Tang. Its consumer-memory platform turns shopping behavior into semantic descriptions of preferences, supplying language context to LLMs and embeddings and graph features to conventional recommendation models. Its personalized carousel architecture uses that consumer context to generate titles and search intents offline. When a customer opens a store, vector search and structured category retrieval find items for those carousels. Keeping LLM generation outside the live request avoids its per-page latency and spreads generation costs across the refresh interval.

DoorDash completed its acquisition of SevenRooms in 2025, extending its merchant offering into in-person hospitality through reservations, customer relationship management, guest experience and marketing software. Integration into the Commerce Platform was planned at closing. DoorDash reported operating in over 30 countries in that announcement; SevenRooms served more than 13,000 venues globally, spanning dining, hotels, nightlife and entertainment.