In lieu of specific numbers from Amazon, Adobe’s insights into broader ecommerce spending during the Prime Day period — which cover over 1 trillion visits to U.S. retail sites, 100 million SKUs and 18 product categories — offer the best, most quantifiable view into consumer behaviors during this critical summer shopping moment.

U.S. online retail sales from the first day of Amazon Prime Day climbed 10% year-over-year to reach $7.9 billion.