Walmart extended AI to fulfil the pandemic-led huge online orders last year. Srini Venkatesan, EVP, Walmart Global Tech, revealed how the technology offers the best substitutes for out-of-stock products. Walmart deployed deep machine learning with plenty of variables such as size, type, price, shopper data, preference, current inventory, etc. These variables help the customers receive the best-suited alternative recommendations both online and in-store.