Amazon.com's storefront experienced an approximately six-hour service disruption, causing an estimated 6.3 million lost orders and a 99 percent drop in U.S. order volume during the affected window. The disruption was the second AI-linked incident at Amazon in less than a week, following the March 2, 2026 outage that caused approximately 120,000 lost orders and 1.6 million website errors. Internal materials traced the March 5 failure to a production code change that was deployed without the company's mandatory formal documentation and approval process, and characterized the broader pattern as part of a "trend of incidents" with "high blast radius" and "Gen-AI assisted changes."