Amazon.com Inc took a big gamble this year by expanding its annual Prime Day summer sale to four days from two, betting the extension would give shoppers more time to navigate the millions of deals on its sprawling web store.

Retail analysts say the first day of Amazon’s Prime Day event and competing sales drove solid online spending.

Amazon Prime Day 2025 - the biggest sale event of the year outside of Black Friday - has officially commenced. New for this year, Amazon has elected to extend the sale to 4 days,