NEW YORK (AP) — Online retail giant Amazon is making a bold expansion into physical stores with a $13.7 billion deal to buy Whole Foods, setting the stage for radical retail experiments that could revolutionize how people buy groceries and everything else.

Amazon could try to use automation and data analysis to draw more customers to stores while helping Whole Foods cut costs and perhaps prices. Meanwhile, the more than 460 Whole Foods stores in the U.S., Canada and the U.K. could be turned into distribution hubs — not just for delivering groceries but as pickup centers for online orders.

"The...