Walmart’s supply chain is often touted as one of the most effective in the world. In the past two years alone, the retailer has invested $11 billion in e-commerce, supply chain, and technology.

The company launched Walmart+, which rivals Amazon Prime, implemented a range of new fulfillment options—such as curbside pickups—and is upgrading its warehouse management system to drive efficiency through its supply chain.

The company has also committed to achieving zero emissions by 2040.