The food and beverage industry is being transformed by growth in e-commerce; however, many grocers see it as the biggest threat to their businesses, according to a recent survey by TD Bank, America’s Most Convenient Bank.

Between labor shortages, customer expectations, automation quandaries and, of course, the high cost of doing business, challenges abound for e-commerce companies — and optimizing processes wherever possible is a priority for everyone.

Some 27 percent of grocery purchasers say Walmart is the in-store retailer they get groceries from most, more than twice as many as Kroger, the next most chosen retailer, according to market research firm Packaged Facts in the report "U.S. Grocery Market Focus: The Walmart Food Shopper."