• Walmart, Target and Kroger are trying to attract shoppers with same-day delivery offerings.
  • The retailers are trying to stand out on convenience, not just price.
  • Target is rolling out a new paid membership service that includes home deliveries as a key perk, and Walmart is offering home deliveries earlier in the morning.

As retailers compete for grocery shoppers, some of the big names in the business have zeroed in on the same strategy: get deliveries to customers' doors quickly.

This week, Target announced a new paid membership program with free same-day home deliveries as a key perk. Walmart expanded its same-day delivery offering to allow shoppers to get online purchases dropped off earlier in the morning.