Amazon (AMZN) Unleashes 1-Hour Delivery Across US, Intensifying Battle with Walmart (WMT)

NEW YORK, March 18, 2026 – Amazon.com Inc. (AMZN) has dramatically escalated its retail war with Walmart Inc. (WMT), launching a nationwide 1-hour delivery service that promises to reshape consumer expectations and logistics. The e-commerce giant announced Tuesday it is rolling out ultra-fast 1-hour and 3-hour shipping options across hundreds of U.S. cities, including major markets like Los Angeles and Chicago, directly challenging traditional retail's last-mile advantage.