Walmart Inc will acquire Latin American food delivery service Cornershop for $225 million, it said on Thursday, in a move to ramp up its online grocery business in Mexico and Chile.

The deal mirrors Walmart's growing investments and tie-ups in online delivery services across the globe, as it aims to compete with Amazon.com Inc, the world's largest online retailer.

Shares of the retail company's Mexico division, known as Walmex, jumped more than 3 percent on the news, closing at their highest level since late July.

Walmart's acquisition of three-year-old Cornershop, which offers its service through a mobile app and was founded in San Francisco, will help it quicken deliveries for its Walmart, Superama and Sam's Club stores in Mexico, analysts said.

"We believe the transaction is positive and will result in greater efficiencies and higher growth in online sales," Signum Research said in a report.

Walmex said it would absorb Cornershop's Mexico operations.

Walmart aims to deliver food to more than 40 percent of US households by year's end using delivery companies like Uber Technologies Inc. In Canada, the company will team up with startup Instacart for on-demand grocery deliveries.

In Mexico, traditional retailers are increasing investments in logistics, technology and product offerings to meet the growing demand for online shopping, including in the food and drink sector. Just 3 percent of all retail sales in Mexico are online, according to market research firm Euromonitor International.

Amazon.com Inc, which bought Whole Foods Market last year, began selling nonperishable groceries online in Mexico in late August.

Walmart said it expects the Cornershop deal to close by year's end, adding that the app would remain an "open platform" serving various grocery and specialty food stores.

Mexican grocery chains Chedraui and La Comer as well as US-based retailer Costco Wholesale Corp, which all offer deliveries via the app, declined to comment.

Judith McKenna, chief executive of Walmart International, said in a statement that the deal was expected to provide a learning experience for the company's other markets.