DoorDash's CEO says he's got an edge on Amazon in groceries

DoorDash reported worse-than-expected fourth-quarter earnings on Wednesday.

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• DoorDash has a key advantage over Amazon in grocery delivery, CEO Tony Xu said Wednesday.
• The delivery service offers a wider variety owing to its myriad partnerships with grocers, Xu said.
• Amazon is ramping up its grocery delivery, creating more competition for DoorDash and Instacart.

DoorDash CEO Tony Xu says that his company's...