KEY POINTS
  • The service will be in 100 metro areas by the end of the year, according to Walmart.
  • Orders will be packaged by "personal shoppers" in stores, and delivery is being crowdsourced from partners such as Uber.
  • Amazon-owned Whole Foods, Kroger and Target, meanwhile, are investing in some of the same initiatives.

Walmart plans to expand its online grocery delivery service to a fleet of roughly 800 stores by the end of the year, as competition continues to ramp up in the digital grocery aisle.

The expansion will open up the retailer to 100 metropolitan areas, reaching more than 40 percent of U.S. households. It will offer shoppers same-day delivery of fresh produce, meat and seafood, along with non-perishable items.