Cloud Capex to Cash: AWS Wins This Way, Alphabet Wins Another Way
AWS and Google Cloud are both burning through tens of billions in capex every quarter, but only one is converting that spending into free cash flow at hyperscale margins right now. Which model actually wins when the 2027 capacity cliff…
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Amazon (NASDAQ:AMZN | AMZN Price Prediction) and Alphabet (NASDAQ:GOOGL) both reported Q2 FY2026 results that put the same question in front of investors: how fast does cloud capex turn into cash? AWS delivered its fastest growth in 18 quarters, while Google Cloud accelerated to 82% year-over-year growth. Both are spending like wartime generals. Only one is monetizing at hyperscale margins today.
AWS Prints Profit. Google Cloud Prints Growth.
AWS revenue reached $42.2 billion with operating income of $16.6 billion and a 39% operating margin. Andy Jassy said the AWS backlog now sits at $496 billion, roughly two and a half times the level of Q3 2025. Trainium and Graviton are doing real work here: Graviton is used by 98% of Amazon’s top 1,000 EC2 customers, and the AI chips business already runs at more than $25 billion.
Google Cloud posted $24.77 billion in revenue, smaller than AWS but growing more than twice as fast. Sundar Pichai said nearly 90% of the Fortune 100 now use Gemini Enterprise, and the Gemini App has 950 million monthly active users. That is the full-stack pitch: models, TPUs, Search, and YouTube all reinforcing one another.
| Business Driver | AWS | Google Cloud |
| Q2 Revenue | $42.2B | $24.77B |
| YoY Growth | 36.7% | 82% |
| Segment Operating Margin | 39% | Not disclosed this quarter |
Capex Bills Come Due Differently
Amazon spent $53.1 billion on cash capex in Q2 and expects to double its power capacity by the end of 2027 versus 2025. Alphabet’s capex hit $44.92 billion, up 100.1% year over year. Both companies ran negative free cash flow in the quarter.
The funding paths diverge sharply. Amazon covers its bills largely through operating cash flow of $45.4 billion plus debt. Alphabet raised approximately $70 billion in combined equity and debt, and suspended buybacks. Long-term debt jumped from $46.5 billion to $98.2 billion.
AWS Wins on Pure Profit. Alphabet Wins on Speed.
Jassy said server investments break even in a little less than three years, then generate cash across a 30-plus year data-center life. That is a long, patient conversion curve backed by proven margins. Alphabet’s speed advantage is different: 82% cloud growth paired with 34% companywide operating margin means demand is compounding faster than at AWS, even if segment profitability lags.
Watching the 2027 Capacity Cliff
I want to see whether Amazon’s $496 billion backlog actually flows through to free cash flow as promised, and whether Alphabet’s Gemini enterprise footprint keeps pulling ahead of the growth curve into 2027. Memory and SSD inflation, flagged by Brian Olsavsky, could squeeze both.
Why I Split the Two for Different Investors
If you want proven cloud economics and a slower, surer cash payoff, AWS inside Amazon looks cleaner to me. The 39.4% AWS margin is doing real work while retail scales. If you want faster top-line acceleration and full-stack AI optionality, Alphabet fits, especially with 46.21% one-year returns already earned. I would hesitate on both if capex keeps outrunning cash into 2027.
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Alex Sirois is a financial writer with experience spanning both retail and institutional investing. He has written for InvestorPlace and held roles at BNY Mellon and Bernstein, giving him a perspective that bridges Main Street portfolios and Wall Street analysis.
Alex holds an MBA from George Washington University and has built his career across multiple industries, including e-commerce, education, and translation — a breadth of experience that informs how he breaks down complex financial topics for everyday investors. His writing is conversational, actionable, and grounded in long-term, buy-and-hold investing principles.
At 247 Wall St., Alex focuses on delivering analysis that is both accessible and useful, with a clear emphasis on helping readers make more informed decisions with their money.
