If 2025 taught ecommerce leaders anything, it’s this:growth didn’t vanish, it got more expensive, more operational, and far less forgiving.
On the surface, Amazon ecommerce delivered another year of expansion. Industry revenue grew5.5%, proving demand is still there. But underneath that topline number, the mechanics of growth changed in ways that caught many brands off guard.
Growth came fromselling more units, not charging more. Units rose10.2%, whileaverage selling price fell 4.3%, even as discounting eased materially. In other words, brands discounted less and still realized lower prices. Competitive pressure and mix shifts did the rest.
This wasn’t a year where brands could rely on promotions or traffic spikes to carry results.2025 forced a different discipline.
Download the full 2025 Retail Ecommerce Year in Review Report now to benchmark your performance.
Demand held. Execution decided who won.
One of the most important shifts in 2025 was where growthdidn’tcome from.
Traffic was essentially flat (glance views down 0.4%). Shoppers didn’t suddenly flood the marketplace. Instead, brands that performed better did so byconverting demand more effectively.
Industry conversion improved from22.3% to 24.6%, a meaningful lift that points to better digital shelf execution,stronger availability, and tighter retail readiness. Brands got better at turning intent into orders and that became the difference.
At the same time, supply-side execution improved sharply.PO fill rate jumped from 77.1% to 90.2%, one of the biggest year-over-year improvements we’ve seen. Operational reliability is no longer a nice-to-have, it’s a prerequisite for growth.
And yet, even with better execution, many brands felt like they were running harder to stand still.
The cost of growth went up quickly
While execution improved,economics moved in the opposite direction.
Unit margins fell from19.4% to 16.7%, a2.6-point compressionthat showed up across categories. At the same time, brands leaned more heavily on retail media to sustain volume.
Ad spend rose19.6%, nearly four times the rate of revenue growth. But higher investment didn’t translate into better efficiency.CPCs increased 8.4%, andROAS declined from 4.85x to 4.46x, down8.1%year over year.
The result? Brands paid more to generateeach incremental dollar of revenue— and kept less of it.
2025 made one thing painfully clear:spend alone is no longer a growth strategy. Efficiency is.
Availability improved but leakage got smarter
At first glance, availability looked like a win in 2025. Reported out-of-stock rates improved across the industry.
But a deeper look revealed a more nuanced (and more dangerous) pattern:revenue loss from availability issues didn’t disappear; it shifted.
Lost Buy Box and high-value OOS events increased, meaning that while brands were out of stock less often, the misses that remained were more expensive. Stockouts increasingly hithigher-demand, higher-value moments, especially during peak periods.
In 2025, availability wasn’t just about being in stock; it was about being in stockwhere it mattered most.
Category performance diverged sharply
The macro story of 2025 played out very differently by category.
Some categories, likePet Supplies, showed what “clean growth” looks like: higher revenue, better conversion, reduced discounting, and even margin expansion.
Others, includingFurnitureandHealth & Personal Care, struggled with demand pressure, weaker paid efficiency, and tighter economics.
Across categories, one pattern held:the brands that treated execution as a growth lever outperformed those that treated it as hygiene.
What 2025 changed going forward
The biggest takeaway from 2025 isn’t pessimistic; it’s clarifying.
The market didn’t punish growth.It punishedwaste.
It punished:
- Inefficient media spend
- Poor availability at critical moments
- Leaky execution between traffic, conversion, and fulfillment
- Growth strategies optimized for scale, not profit
And it rewarded brands that connectedpricing, inventory, retail media, and operationsinto a single, disciplined system.
As brands plan for 2026, the lesson is clear:
The winners won’t be the ones who spend more.They’ll be the ones who operate more tightly.
Growth is still there. But in today’s ecommerce landscape, it has to beearned deliberately, efficiently, and profitably.
Download the full 2025 Retail Ecommerce Year in Review Report now to benchmark your performance.
