Amazon plans to expand its popular one-day shipping to more ZIP codes and products, the company said late last week as part of its earnings report.

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Amazon will shift its free two-day shipping for Prime members to one-day shipping starting in the second quarter of this year, at a cost of $800 million, Chief Financial Officer Brian Olsavsky said Thursday on a call with analysts.

“We’re able to do this because we’ve spent 20-plus years expanding our fulfillment and logistics network, but this is still a big investment,” he said.

The one-day, same-day and one- or two-hour delivery options have been available for shoppers before now, but Amazon is moving the core two-day offer for Prime members to a one-day option. It's already significantly expanded to new ZIP codes and in products in the past month, Olsavsky said.

It’s unclear when the change will be fully implemented, but some Dayton, Ohio, ZIP codes recently gained access to the free one-day shipping as well as the option to pick an “Amazon Day,” where Prime members can choose a day of the week for their packages to arrive.

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In this file photo from October 2024, Atlanta Braves outfielder Jorge Soler and teammates react after losing to the San Diego Padres 5-4 in San Diego. The Braves and Soler, who now plays for the Los Angeles Angels, face a lawsuit by a fan injured at a 2021 World Series game at Truist Park in Atlanta. (Jason Getz/AJC)

Credit: Jason.Getz@ajc.com