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 ...

Sometime around Christmas, Sarah Burzio noticed that the holiday sales bump for her stationery business included some mysterious new customers: a flurry of orders from anonymous email addresses ...

Nintendo Co. pulled its products from Amazon.com Inc.’s U.S. site after a disagreement over unauthorized sales, meaning the e-commerce company missed out on the recent debut of Nintendo’s Switch 2 — ...