One-fifth of sales.
Three-fifths of the
profit. That's AWS.
The cloud business Amazon invented is where the real money — and the moat — lives.
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✦ The bottom line
AWS is just 21% of Amazon's revenue but throws off about 60% of its operating profit, at 38% margins. Once a company builds on AWS, moving off it is slow, costly, and risky.
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✦ Teach me
Cents of profit per dollar of sales
After paying all the costs of running a business, the cents of profit left from each dollar of sales. Retail leaves pennies. Cloud computing, at Amazon's scale, leaves a fortune — because the hard part (the data centers) is already built.
Wall Street calls this
Operating margin
AWS earns *38¢* of operating profit per dollar versus single digits in retail — which is why AWS *is* the investment case.
Where the profit really comes from · AWS
59
%
AWS produced $14.2B of Amazon's $23.9B operating profit — about 60% — on just 21% of revenue, at a 38% margin.
A business that earns 38¢ on the dollar in a market it created doesn't get there by accident. Amazon spent two decades building two moats at once — a retail flywheel that makes shopping reflexive, and a cloud platform that companies wire themselves into. Here's the short version.
How the moats were built
1994-97
An online bookstore becomes 'the everything store,' obsessed with scale and price.
2005
Prime launches — free shipping turns shopping into a habit, then a subscription.
2006
AWS invents the cloud-rental market years before rivals notice.
Now
AWS + ads + its own AI chips compound; OpenAI and Anthropic sign on as customers.
The moat, in the customer list
AWS is growing 28% (our fastest growth in 15 quarters) on a very large base, our chips business topped a $20 billion revenue run rate (growing triple digits year-over-year), Advertising grew to over $70 billion in TTM revenue …
↳ Re-accelerating at this scale, plus a $20B in-house chip business and marquee AI customers, is what a widening moat looks like in numbers.