In his expanded role, Buechel will oversee Amazon's roster of grocers, including Whole Foods, Amazon Fresh, Amazon Go and other grocery partnerships, as the division looks for ways to boost revenue. He will keep his role as CEO of Austin-based Whole Foods.

Jason Buechel, who remains head of the specialty banner, steps into a new role in which he will also oversee the Amazon Fresh and Amazon Go chains.

Amazon named Jason Buechel, who currently serves as CEO of Whole Foods, to oversee its larger worldwide grocery business.