July 12 (UPI) -- Amazon posted its single biggest sales day ever during the 30-hour Amazon Prime Day that concluded Wednesday, the online retailer said.
Prime Day is Amazon's self-declared shopping holiday, where Prime subscribers are offered deep discounts on many items as a way to prop up what is traditionally the slowest time of the year for retail sales. Prime Day bested two traditional shopping events -- Black Friday and Cyber Monday, which are the traditional kickoffs to the holiday shopping season.