🔍 Read the full analysis: How AI Demand And Cash Investment Are Shaping AWS’s Growth on ThorstenMeyerAI.com
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TL;DR
Amazon reported 39% year-over-year AWS revenue growth to $46.0 billion for the quarter ended September, its fastest pace since late 2021, alongside a $578 billion AWS backlog. The company also reported heavy investment spending and trailing 12-month free cash flow of minus $42.4 billion, while its shares fell more than 6% in after-hours trading.
Amazon said AWS revenue rose 39% to $46.0 billion in the third quarter, its fastest growth rate since the end of 2021, as contracted future revenue climbed to $578 billion. The cloud gains came with a much larger investment bill: Amazon spent $75.9 billion on capital projects in the quarter, and its trailing 12-month free cash flow fell to minus $42.4 billion. Amazon shares dropped more than 6% in after-hours trading following the results.
AWS operating income increased 55% to $17.8 billion, according to Amazon’s October 29 results. The company’s reported AWS growth rate has accelerated for six consecutive quarters, from 17% in the second quarter of 2025 to 39% in the latest quarter, excluding currency effects, according to the source material. Chief Executive Andy Jassy said AWS’s contracted future revenue, or backlog, rose from $496 billion to $578 billion in the three months to September.
Chief Financial Officer Brian Olsavsky said the quarter’s $75.9 billion in cash capital spending was primarily related to AWS and artificial intelligence. Jassy said most of Amazon’s approximately $220 billion capital spending plan for 2026 is directed to AWS. The company had previously planned about $200 billion for the year and increased that figure in July, citing higher memory prices, according to the source material. Amazon expects spending to be “meaningfully more” in 2027.
Amazon generated $168.3 billion in operating cash over the 12 months through September, up 29%, while capital spending over that period reached $210.7 billion, up 82%. The resulting trailing free cash flow was minus $42.4 billion, compared with positive $14.8 billion a year earlier. The source estimates quarterly free cash flow at about minus $33.5 billion, calculated from company figures; it is not presented as an Amazon-reported figure. Long-term debt increased from $65.6 billion to $173.1 billion over the first nine months of 2026.
The results also included figures that fell short of analyst expectations. Earnings per share were $1.89, versus a $1.96 estimate, and advertising revenue missed expectations, according to figures cited from CNBC, LSEG and StreetAccount. Amazon’s revenue forecast for the holiday quarter was also slightly below expectations. The share-price decline followed the report, though the available source material does not establish one single cause for the market reaction.
Infographic 01 · The scorecard
Fastest cloud growth in five years, deepest cash gap.
Amazon’s third quarter (July to September 2026), scored against the four numbers from my 28 October preview.
The four numbers from my preview, scored for Amazon
Status chips: ok = healthy, hold = watch, urgent = warning sign. My assessment.
- 1 · Capex planAbout $220B for 2026, unchanged holdRaised from $200B in July, citing memory prices. 2027: “meaningfully more”, no number.
- 2 · Cloud vs. capexAWS +39%, operating income +55% holdGross capex +120% vs. a year earlier ($77.3B vs. $35.1B, my arithmetic). Revenue grows fast; spending faster.
- 3 · Free cash flow + fundingDeeply negative, financed with bonds urgentAbout −$33.5B in the quarter (my arithmetic). $48.1B of new long-term debt in Q3.
- 4 · CapacityCustomers take it as fast as it is installed okBacklog +$82B in one quarter. Big blocks reserved well in advance; visibility into 2027–2028.
What beat
- AWS revenue $45.98B vs. $45.29B expected
- AWS operating income $17.77B vs. $16.97B expected
- Operating margin 13.9%, Amazon’s highest ever
What missed
- Earnings per share $1.89 vs. $1.96 expected
- Advertising $19.64B vs. $20.82B expected
- Q4 revenue guide midpoint $243.5B vs. $244.5B expected
- Shares down more than 6% after hours (CNBC; GeekWire: more than 7%)
Sources: Amazon Q3 2026 release, 29 Oct 2026; Amazon Q3 call, third-party transcript; CNBC, 29 Oct; CNBC, 30 Jul; GeekWire, 29 Oct. Analyst expectations as reported by CNBC (LSEG, StreetAccount). Quarterly free cash flow and capex growth: my arithmetic from Amazon’s cash flow statement. Status chips: Thorsten Meyer.
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AI Growth Comes With a Cash Cost
The results show the trade-off Amazon faces as it expands infrastructure to serve demand for cloud computing and AI. Backlog is evidence of contracted demand, but it is not cash already received: customers generally pay as they use capacity over time, while data-center construction, chips and equipment require upfront spending. That timing gap helps explain why faster AWS growth can coincide with sharply negative free cash flow.
For investors, the question is not just whether AWS can attract customers, but whether the returns from its new capacity will arrive quickly enough to support the cost of building it. Amazon’s own forecast of roughly $220 billion in 2026 capital spending, with more expected in 2027, signals that the investment cycle is continuing. The quarter’s results therefore combine strong cloud performance with a substantial near-term cash burden.
For cloud customers, the build-out matters because available capacity, pricing and access to newer AI chips can shape where and how quickly they run workloads. The source says large blocks of AI capacity are being reserved well in advance and that short-term capacity on older AI chips can sell at a premium. Those are reported observations, not a complete picture of AWS prices or availability across its services.
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AWS Backlog and Build-Out
The acceleration in AWS growth has unfolded alongside a broader infrastructure expansion. Amazon’s property and equipment increased from $357.0 billion at the end of 2025 to $508.9 billion at the end of September, according to the source material. Jassy said the company is installing an AI accelerator about every 14 seconds. The figure is his description of Amazon’s installation pace, not an independently verified measure.
Amazon designs its own Trainium AI chips and Graviton processors, as well as offering AWS services that let customers run AI models. Jassy said revenue commitments for the company’s chips increased more than 20-fold in a year, and Amazon said customers saved more than $2 billion in the quarter by using its chips. Those are company statements; the source does not provide independent validation or detailed methodology for either figure. Amazon also plans to sell Trainium chips outside AWS from late 2027, according to the source.
Some of the new equipment costs continue to affect earnings after purchase. Amazon reported quarterly depreciation and amortization of $20.9 billion, up 25%. This accounting expense spreads the cost of equipment and other assets over time, so the spending can weigh on reported results beyond the quarter in which the company pays for the assets. The source says Amazon’s guidance also cites energy prices and supply volatility, including for memory chips, as risks.
““meaningfully more””
— Andy Jassy, Amazon chief executive
Returns Depend on Future Utilization
The $578 billion backlog does not reveal when all contracted revenue will be recognized, how much capacity each contract requires, or the associated margins. The available material also does not break down the $75.9 billion in quarterly spending by data centers, chips, energy infrastructure or other items, nor does it specify how much of the planned investment will be funded through operating cash, debt or other sources.
Amazon’s estimates of customer savings from its chips and its claims about the economics of owning versus renting capacity are company statements, not independently audited comparisons in the source material. The full effect of power costs, memory prices and equipment depreciation on future AWS profitability is also uncertain. The source does not establish that the stock decline resulted solely from capital spending; earnings, advertising and the holiday-quarter forecast also missed expectations.
Watch Spending and AWS Returns
Investors and customers will look for signs that new infrastructure is being filled and generating revenue, alongside updates to Amazon’s capital spending outlook. The company has indicated that 2026 investment will be about $220 billion and that 2027 spending will be meaningfully higher, but the source material gives no more detailed quarterly schedule. Amazon’s next financial results should provide another update on AWS growth, operating income, cash generation and spending.
For cloud users, the near-term issue is access to capacity and the cost of AI workloads. The source says large AI capacity reservations are made well in advance and that Amazon plans to offer Trainium outside AWS from late 2027. The scale of that external offering, its pricing and the timing of customer access have not been specified.
Key Questions
How fast did AWS grow in the third quarter?
AWS revenue rose 39% year over year to $46.0 billion in the July-to-September quarter, according to Amazon. The company said this was its fastest growth rate since the end of 2021.
Why was Amazon’s free cash flow negative?
Amazon’s trailing 12-month capital spending reached $210.7 billion, exceeding the $168.3 billion in operating cash it generated over the same period. The company reported trailing free cash flow of minus $42.4 billion, as it invested heavily in data centers, chips and equipment.
What does AWS’s $578 billion backlog mean?
It is the value of contracted future revenue Jassy said AWS had secured as of the quarter’s end. It indicates substantial contracted demand, but does not show exactly when revenue will be recognized or the profit AWS will earn from those contracts.
What did Amazon say about future investment?
Amazon expects about $220 billion in capital spending in 2026, with most of it directed to AWS, according to Jassy. The company expects spending to be meaningfully higher in 2027, but the source does not provide a specific amount.
Source: ThorstenMeyerAI.com
