Amazon is making a major change to its physical footprint in the U.S. The e-commerce giant announced Tuesday that it will close all of its Amazon Go and Amazon Fresh physical grocery stores in an effort to prioritize online delivery service and expand its popular Whole Foods Market business.

Amazon AMZN 1.68% is closing all of its Amazon Go and Amazon Fresh physical stores in a shift to focus on its online same-day delivery service and new big-box retail stores.