The AI spending boom has come with a trillion-dollar question: When will all those data centers start paying off? Microsoft and Alphabet offered some answers on Wednesday, with both companies reporting stronger-than-expected cloud revenue while spending less than Wall Street anticipated. But while their cloud businesses delivered, the earnings picture told two very different stories.
Cloud growth is paying off
Microsoft's Azure business grew 48% in the quarter ended Sept. 30, accelerating from 42% in June. Revenue reached $33.17B, beating Wall Street's forecast.
Alphabet's Google Cloud was no slouch either. Revenue climbed to $30.7B, beating expectations as demand for its AI products continued to accelerate.
Demand remains strong enough that Microsoft is struggling to keep up. CFO Amy Hood previously acknowledged that "customer demand continues to exceed supply" for Azure.
Azure Edges Out Google Cloud on Quarterly Revenue
Cloud revenue, quarter ended Sept. 30, 2026, $B
Bar chart. Quarterly Revenue ($B). Microsoft Azure: Revenue ($B) $33.2. Google Cloud: Revenue ($B) $30.7.
A smaller bill, relatively speaking
Both companies managed to keep their infrastructure bills below expectations, although the numbers were hardly small.
Microsoft spent $45.2B on capital expenditures, below the $50.67B analysts expected. Some of that difference came down to accounting, as more data center leases are now treated as rental expenses rather than capital purchases.
Alphabet's capital spending reached $51.36B, also coming in below Wall Street's forecast. The AI arms race is still expensive, but neither company needed to spend quite as much as investors had anticipated.
Both Spent Less on AI Buildout Than Wall Street Expected
Capital expenditures, quarter ended Sept. 30, 2026, $B
| Company | Capex (actual, $B) | Analyst estimate ($B) |
|---|---|---|
| Microsoft | $45.20B | $50.67B |
| Alphabet | $51.36B | $55.09B |
Where earnings diverged
Microsoft delivered the cleaner quarter. Revenue rose 19% to $92.28B, beating expectations, while adjusted earnings of $4.89 per share also topped forecasts.
Alphabet's results were more complicated. Revenue jumped 25% to $127.58B, its fastest growth since 2021, but still missed Wall Street's expectations.
Its core advertising business also disappointed. Search revenue of $63.35B fell short of forecasts, while operating income reached $40.58B, also below expectations.
The bigger headache came from Alphabet's investments. After booking a $99.03B gain on stakes including SpaceX and Anthropic in the previous quarter, the company recorded an $8.66B loss in the third quarter. Net income fell to $26.17B from $34.98B a year earlier.
Cash is feeling the pressure
Strong cloud demand hasn't made the infrastructure bills any easier to swallow.
Microsoft's free cash flow, or the cash remaining after capital expenditures, fell 27% to $18.63B. Alphabet also saw its free cash flow decline as spending continued to weigh on the business.
Microsoft is looking beyond data centers to manage costs. The company announced 4.8K job cuts during the quarter and recently offered buyouts to as many as 60K employees.
Both companies are bringing in more cloud revenue, but converting that growth into available cash remains a challenge.
What it means for investors
The latest results offer something AI investors have been waiting for: evidence that enormous infrastructure investments are translating into actual sales.
Microsoft and Alphabet both delivered stronger cloud growth than Wall Street expected, suggesting demand for AI computing remains firmly intact.
The difference is what happens after those sales come in. Microsoft's cloud momentum helped push net income to $36.63B from $27.75B a year earlier, giving investors a clearer connection between AI demand and profitability.
Alphabet's cloud business is growing just as aggressively, but its broader earnings remain vulnerable to swings in the value of private investments.
For now, Microsoft has the cleaner earnings story, while Alphabet has a cloud business firing on all cylinders and an investment portfolio that can still steal the show for the wrong reasons.
