Walmart is working with Instacart to provide same-day delivery beginning with a few U.S. markets. This makes it the latest major grocery chain to team up with Instacart to compete with Amazon, which offers grocery delivery services Amazon Fresh and Amazon Prime Now from its own warehouses and Whole Foods stores. The partnership is implementing a pilot phase in four markets in California and Oklahoma. Consumers are relying on grocery delivery now more than ever during the COVID-19 pandemic, making the partnership a key opportunity for Walmart. It also reinforces Instacart’s place in the online grocery delivery market. Experts say customers will continue to shop online even after the virus outbreak subsides.