How Amazon Actually Makes Money: AWS vs Retail vs Ads

Amazon looks like one company on your investing app, but underneath the ticker sit three businesses with almost nothing in common except a shared balance sheet. 

In the twelve months through March 2026, Amazon Web Services brought in roughly a fifth of the company's revenue and close to three-fifths of its operating profit. The retail business, the one selling everything from phone chargers to dog food, generated the overwhelming majority of sales and turned only a sliver of that into profit. Sitting quietly in between is Amazon's advertising arm, small in size but arguably the best-kept profit secret in the entire company.

Let's break down how three very different businesses sit inside one Amazon income statement, and why the revenue chart and the profit chart tell almost opposite stories.

Amazon Business Segments: North America, International and AWS

When Amazon files results with the SEC, it splits itself into exactly three reportable segments: North America, International, and AWS. North America and International are both retail businesses, essentially the same operation split by geography, covering online and physical stores, third-party seller fees, and subscriptions like Prime. AWS is the cloud computing business.

Advertising is not a fourth segment. It is a revenue line that Amazon discloses separately in its filings, but the actual advertising dollars and the costs of running that business sit inside the North America and International numbers, mixed in with everything else. That single accounting choice is the reason so much confusion exists about where Amazon's real profit comes from, and it is the starting point for everything that follows.

Amazon Revenue vs Profit Breakdown: Why AWS Drives Earnings

Revenue by segment:

Source: Amazon Q4 2025 and Q1 2026 earnings releases, via SEC filings and Amazon Investor Relations.

North America alone brings in more revenue than the other two segments combined. If you judged Amazon purely by where its sales come from, you would call it a retail company with a cloud side hustle. Now look at where the profit actually lands.

Operating income by segment:

Source: Amazon Q4 2025 and Q1 2026 earnings releases.

I'd call this the cleanest number in the whole story: AWS supplied 18% of Amazon's revenue in FY2025 and 57% of its operating profit. By Q1 2026 that had drifted to roughly 21% of revenue and 59% of profit. 

I'll call it Amazon's 20/60 Rule, since it holds up almost exactly whichever recent quarter you check. On a full-year and trailing-twelve-month basis, Amazon follows something close to an 18/57 pattern: AWS generates less than one-fifth of revenue but more than half of operating income. The exact split can vary significantly from quarter to quarter.

Three Businesses, One Wedding: How Amazon Makes Money Through Retail, AWS and Advertising

Here's a way to hold this in your head without a spreadsheet. Picture a big Indian wedding with three vendors working the same event.

The caterer serves food to five hundred guests and does it at razor-thin margins, sometimes barely covering cost, because the point isn't to make money off the plates, it's to keep everyone fed, happy, and coming back for the next family function. That's Amazon's retail business: enormous scale, wafer-thin margins, running mostly on volume and loyalty rather than per-order profit.

The banquet hall owner rents out the same tent, lighting rig, and sound system to wedding after wedding, and once it's built, almost every rupee of rent drops straight to profit. That's AWS: a fixed, expensive asset that gets reused across enormous scale, converting a large share of every incoming dollar into operating income.

Then there are the little sponsor stalls near the entrance, jewellery brands and gift companies paying to put their name in front of guests. It's a smaller line item than catering or the hall, but it's almost pure margin. That's Amazon's advertising business.

Profit generated per $1 of revenue by segment, FY2025:

For every $1 that flows through AWS, about 35 cents becomes operating profit. Run that same dollar through the North America retail engine, and only about 7 cents survives. Run it through International, and it's closer to 3 cents. Same company, same income statement, three completely different conversion rates.

The Retail Ghost Margin: What's Actually Hiding Inside Those Two Segments

Here's where it gets more interesting, and here's where I want to be upfront that what follows is an estimate, not a number Amazon discloses.

North America and International combined generated $588.2 billion in revenue in FY2025 and $34.3 billion in operating income, a blended margin of about 5.8%. Buried inside that $588.2 billion is Amazon's advertising revenue of roughly $68.6 billion, which grew about 22% year-on-year and is widely believed to be a much higher-margin business than the retail operation it's embedded in.

Digital commerce analyst Russ Dieringer has estimated Amazon's ad business runs at close to a 40% operating margin, with some industry insiders suggesting figures as high as 80%, as reported by Forbes. Amazon itself does not confirm a specific number, so treat what follows as a model, not a fact.

Reverse-engineering the "core" retail margin, FY2025:

Strip the advertising layer out of North America and International, and the retail and logistics engine underneath looks like it's running somewhere between barely breakeven and a loss, depending on which margin assumption you trust. Even the conservative case puts core retail profitability at roughly a tenth of AWS's margin. This is my own back-of-envelope calculation, built on a third-party estimate rather than Amazon's own disclosure. But directionally, it lines up with what Amazon's own executives have said for years: advertising and subscription revenue is what's actually lifting the retail segments into profitability, not the retail transactions themselves.

Amazon Revenue and Profit Mix: Five-Year Trend

Five-year trend:

In 2022, AWS's $22.8B operating income was actually larger than Amazon's entire consolidated operating income of $12.2B, because North America lost $2.8B and International lost $7.7B that year. AWS wasn't just carrying the company's profit, it exceeded it. Source: Amazon FY2022 and FY2023 10-K filings.

Most people assume AWS's profit dominance is a recent AI-era phenomenon. It isn't. It's been a structural feature of Amazon for at least five years, and if anything the gap has narrowed slightly since 2022, as advertising scaled up and International finally turned profitable in 2024 after years of losses. That's the part I find genuinely underappreciated: North America and International have been quietly getting better at converting revenue into profit, largely on the back of ads and logistics efficiency, not because the underlying retail economics changed.

Why Amazon Keeps Running a Thin-Margin Retail Business on Purpose

If retail barely makes money, why keep growing it? Because the flywheel logic still works. A larger retail base means more Prime subscribers, more first-party shopping data, more inventory to advertise against, and more workloads that eventually touch AWS. Retail's job was never to maximise its own margin. Its job is customer acquisition and data, and the ad business plus AWS are where that gets monetised.

This is also where India fits into the picture for readers here. Amazon initially announced plans in December 2025 to invest more than $35 billion across its India businesses through 2030. In June 2026, it added $13 billion of planned AI and cloud investment, taking its total planned investment from 2026 to 2030 to $48 billion. The amount spans AWS infrastructure, e-commerce, logistics and other operations, so it should not be treated entirely as an investment in Amazon’s International stores segment. It's a long-run bet that today's thin-margin geography becomes tomorrow's higher-margin one, the same path North America has already walked.

Our Take

The market's attention tends to fixate on whether AWS is growing fast enough. I think that's the wrong question right now. The more important one is whether AWS's margin holds up under this scale of capital spending, because that margin is now doing more work than ever to keep the whole company profitable. 

Retail's thin margins aren't a flaw, they're a deliberate trade of profit for scale and loyalty, and that trade only makes sense as long as AWS keeps converting a third-plus of every dollar into profit. If that margin ever drifts toward the group average instead of sitting multiples above it, Amazon's profit story looks completely different, even with revenue growing at the same healthy pace.