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(CNN Business) —  

Walmart’s grocery strategy has a missing piece: voice shopping. It is turning to Google to fill the gap.

Amazon customers can shop groceries from Whole Foods by calling out orders in their homes to their Echo devices, but Walmart customers have lacked that option.

Walmart doesn’t make its own smart device like Amazon, so it’s tapping Google Assistant, Google’s AI-powered voice assistant, which is available on more than a billion devices. The two companies announced a partnership on Tuesday that will allow Walmart shoppers to order groceries for pickup and home delivery through Google Assistant.

Starting later this month, voice shopping for pickup will be available at more than 2,100 Walmart stores and online delivery at more than 800 Walmart stores. Walmart customers’ purchase histories will be linked to Google Assistant, so the assistant will know which type of products customers prefer.