Amazon’s top brass have plenty to smile about after Prime Day 2025, which raked in $24.1B and saw a 3,300% surge in AI-driven traffic.
Amazon just ran the most lucrative Prime Day in history, and the numbers are so big they almost break your brain.
Prime Day 2025 sales set a new summer record
According to Adobe Analytics, U.S. consumers spent $24.1 billion online during Amazon’s Prime Day event from July 8–11. That’s more than two Black Fridays worth of spending in just four days. It also blew past Adobe’s own projection of $23.8 billion, clocking in at 30.3% year-over-year growth.
Amazon didn’t share exact revenue figures, but confirmed that this was the biggest Prime Day ever—more items sold, more savings, and more sales than any prior event. Third-party sellers crushed it too, logging record item volume.
Meanwhile, Prime Day went head-to-head with Walmart’s six-day “Walmart Deals” event, which ran through July 13 and competed for both online and in-store traffic. So yes, the sales arms race is very real—and it’s escalating.
Gen AI traffic spikes, but paid search still rules
Here’s the wildcard: generative AI. Traffic to U.S. retail sites driven by AI-powered tools—chatbots, browsers, shopping assistants like Amazon’s Rufus—jumped 3,300% year over year. That’s not a typo.
The surge shows that shoppers are finally embracing AI tools as real buying companions. But let’s not crown them just yet—Adobe notes that gen AI still lags behind traditional channels like email and paid search.
- Paid search accounted for 28.5% of ecommerce sales (up 5.6% YoY) 🧠
- Influencers drove 19.9% of sales, converting 10x better than regular social 🤳
- Gen AI traffic boomed, but still trails legacy channels 🚀
What actually sold (and what didn’t)
Top-performing categories during Prime Day 2025:
- Appliances: +112% vs June daily avg 🔌
- Office supplies: +105% 📎
- Electronics: +95% 📱
- Books: +81% 📚
- Tools & home improvement: +76% 🛠️
- Baby & toddler: +55% 🍼
Also worth noting: more than half of Prime Day purchases were under $20, and the average order size was just $53.34, per Numerator.
That means people weren’t necessarily blowing out their wallets—they were bargain-hunting, especially on mobile, which made up $12.8B of total spend.
Operator POV: Prime Day is no longer just Amazon’s show
Yes, Amazon raked it in. But this wasn’t a solo act.
Retailers across the board benefitted from the halo effect. From Walmart Deals to Buy with Prime discounts on DTC sites, this was a full-spectrum ecommerce holiday.
Amazon’s four-day extension gave shoppers more time to browse, compare, and cherry-pick discounts—not just on Amazon but everywhere. Momentum Commerce even noted that sales were down 35% the first two days, then surged 165% on day three. That’s a shift in buyer behavior: wait for deeper discounts, then pounce.
So what?
Amazon’s not just selling products. It’s growing a moat.
Prime Day 2025 was about:
- Harvesting Prime signups
- Feeding AI shopping habits
- Driving traffic to off-platform DTC stores via Buy with Prime
- And yes, training consumers to keep checking back
Welcome to the new ecommerce playbook—longer sales, smarter tools, and more ways to keep shoppers inside your ecosystem.
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