Why Amazon is buying Whole Foods (AMZN, WFM)

Amazon swooped in to buy the high-end grocer Whole Foods on Friday, paying $13.7 billion, or $42 a share — a healthy 27% premium on the previous day's closing price.
So what's in it for Amazon?
There are a couple of strategic plays at work for the online retail giant.
For starters, acquiring Whole Foods' 440 US stores — many of them in prime locations — could bolster the network for AmazonFresh, the company's grocery delivery service.
"To ship efficiently groceries to consumers