Cloud sales accelerate while the infrastructure bill draws down cash
AWS, Azure and Google Cloud reported strong September-quarter revenue growth, but company-wide cash flow and future capacity obligations show why cloud sales alone cannot establish the return on AI spending.
The October 28–29 results put recognized revenue behind the cloud expansion.
For the three months ended September 30, AWS reported $46.0 billion of sales, up 39.3% year over year; Microsoft’s Azure reported $33.165 billion, up 48%; and Google Cloud reported about $30.7 billion, up 103%. [1][2][3][4][5][6]
The periods align, but the businesses do not have identical boundaries. These totals include non-AI workloads, while Google Cloud also includes TPU systems sales. Microsoft Cloud’s broader $63.9 billion measure includes products beyond Azure. The comparison shows growth within each disclosed business; adding the three numbers would not produce an AI market size or a clean market-share estimate. [1][2][3]
Cash generation asks a different question. Alphabet reported $42.3 billion of quarterly operating cash flow and $51.4 billion of capital expenditure, producing negative $9.1 billion free cash flow. Microsoft reported $58.0 billion of operating cash flow and $39.367 billion of cash additions to property and equipment in the same quarter. That latter measure does not include the full value of finance leases at inception. [2][3][7]
Amazon reported negative $42.4 billion free cash flow over the trailing twelve months, driven largely by increased equipment purchases. That is a company-wide annual window, not AWS’s quarterly result. [1][4]
Sources & details 7 sources
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- Amazon · Q3 2026 results
October 29 release. AWS segment sales and profit are quarterly; free cash flow is company-wide trailing twelve months.
- Alphabet · Q3 2026 earnings transcript
October 28 original transcript; mutable event URL checked after the barrier. Cash flow, capex, TPU-system sales and maximum future obligations retain distinct scopes.
- Microsoft · FY2027 Q1 results
October 28 release for quarter ended September 30. Recast comparative data; Azure is distinct from Microsoft Cloud. Cash property/equipment additions exclude noncash lease inception.
- AP · Amazon results, via NY1
Independent newsroom confirmation of AWS growth and negative trailing-year free cash flow. The corrected report identifies an outflow rather than a decline to a still-positive cash-flow figure.
- Reuters · Google Cloud results
Independent newsroom confirmation of approximately $30.71B Google Cloud revenue and September reporting period.
- Reuters · Microsoft cloud results
Independent newsroom confirmation of Azure revenue and growth.
- Reuters · cloud growth and cash generation
October29 independent reporting corroborates Alphabet negative quarterly free cash flow and Microsoft approximately$18.6B free cash flow. Its$45.2B infrastructure measure is not the cash property/equipment line used here.
Images & figures
Year-on-year growth in recognized revenue, with each company’s business scope retained.
Euangelion · original explanatory figure · Source · Usage terms · Download figure