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Can Microsoft's Big AI Capex Translate Into Sustainable Returns Ahead?
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Key Takeaways
Microsoft's AI buildout is backed by $678 billion in commercial remaining performance obligations.
Short-lived AI hardware drives much of Microsoft's capex, allowing spending to slow if demand weakens.
Amazon and Alphabet also ramp up AI spending, supported by strong cloud growth and sizable backlogs.
Microsoft (MSFT - Free Report) changed how it reports its business in September 2026, and the change puts its AI investment case in sharper focus. Starting with fiscal 2027, the company has merged its three reporting segments into two: Agents and Infra, and Devices and Consumer. The new Agents and Infra segment groups Azure, Microsoft 365 cloud and industry solutions together. Restated figures show the segment generated $268.1 billion in revenues and $136.4 billion in operating income in fiscal 2026, which works out to an operating margin above 50% even at the peak of the buildout. Management expects first-quarter fiscal 2027 Agents and Infra revenues of $75.15-$75.75 billion.
The spending is enormous. Fiscal fourth-quarter capital expenditures were $41 billion, and roughly two-thirds of that went to short-lived assets, mainly CPUs and GPUs. First-quarter capex is expected to exceed $50 billion, and a lease reclassification has lifted the calendar 2026 estimate to about $175 billion. Free cash flow fell to $19.6 billion from about $25.6 billion a year earlier, and Microsoft Cloud gross margin fell year over year to 65%.
The strongest offset is how much future demand is already visible. Commercial remaining performance obligation jumped 84% to $678 billion, and about 30% of it is expected to be recognized as revenue within 12 months. Azure revenues exceeded $100 billion for the first time in fiscal 2026. Under the new definition, Azure is projected to grow 44-45% in constant currency in the first quarter, while Microsoft 365 commercial cloud is expected to grow about 17%. That outlook is supported by more than 30 million paid Copilot seats and new usage-based billing.
For fiscal 2027, Microsoft expects double-digit growth in revenues and operating income. It sees full-year operating margins slipping by less than a point and free cash flow staying positive. Because so much of the spending goes to short-lived hardware, the company can slow purchases quickly if demand weakens. Rising depreciation and margin pressure remain real risks. Even so, guidance anchored in a large contracted backlog suggests the capex cycle is increasingly backed by committed demand.
How Amazon and Alphabet Stack Up on AI Capex Returns
Amazon (AMZN - Free Report) and Alphabet (GOOGL - Free Report) are pursuing similarly aggressive AI infrastructure buildouts. Amazon raised its 2026 cash capex outlook to about $220 billion. AWS revenues climbed 37% to $42.2 billion in the second quarter, and its backlog reached $496 billion. Amazon expects capacity to remain short of demand into 2027. Alphabet lifted its 2026 capex guidance to $195-$205 billion, as Google Cloud revenues surged 82% to $24.8 billion. Alphabet's cloud backlog stood at $514 billion, with slightly more than half expected to convert into revenue within 24 months. However, Alphabet's free cash flow turned negative in the second quarter.
MSFT shares have returned 9.6% in the year-to-date (YTD) period against the Zacks Computer – Software industry’s 0.1% return. The Zacks Computer and Technology sector has appreciated 25.4% in the same time frame.
MSFT’s YTD Price Performance
Image Source: Zacks Investment Research
From a valuation standpoint, MSFT stock appears overvalued, trading at a trailing 12-month price/earnings ratio of 30.66X, higher than the industry’s 28.57X. MSFT has a Value Score of D.
MSFT’s Valuation
Image Source: Zacks Investment Research
The Zacks Consensus Estimate for MSFT’s fiscal 2027 earnings is pegged at $19.65 per share. The estimate indicates 9.47% year-over-year growth.
View the Zacks #1 Rank List
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Can Microsoft's Big AI Capex Translate Into Sustainable Returns Ahead?
Key Takeaways
Microsoft (MSFT - Free Report) changed how it reports its business in September 2026, and the change puts its AI investment case in sharper focus. Starting with fiscal 2027, the company has merged its three reporting segments into two: Agents and Infra, and Devices and Consumer. The new Agents and Infra segment groups Azure, Microsoft 365 cloud and industry solutions together. Restated figures show the segment generated $268.1 billion in revenues and $136.4 billion in operating income in fiscal 2026, which works out to an operating margin above 50% even at the peak of the buildout. Management expects first-quarter fiscal 2027 Agents and Infra revenues of $75.15-$75.75 billion.
The spending is enormous. Fiscal fourth-quarter capital expenditures were $41 billion, and roughly two-thirds of that went to short-lived assets, mainly CPUs and GPUs. First-quarter capex is expected to exceed $50 billion, and a lease reclassification has lifted the calendar 2026 estimate to about $175 billion. Free cash flow fell to $19.6 billion from about $25.6 billion a year earlier, and Microsoft Cloud gross margin fell year over year to 65%.
The strongest offset is how much future demand is already visible. Commercial remaining performance obligation jumped 84% to $678 billion, and about 30% of it is expected to be recognized as revenue within 12 months. Azure revenues exceeded $100 billion for the first time in fiscal 2026. Under the new definition, Azure is projected to grow 44-45% in constant currency in the first quarter, while Microsoft 365 commercial cloud is expected to grow about 17%. That outlook is supported by more than 30 million paid Copilot seats and new usage-based billing.
For fiscal 2027, Microsoft expects double-digit growth in revenues and operating income. It sees full-year operating margins slipping by less than a point and free cash flow staying positive. Because so much of the spending goes to short-lived hardware, the company can slow purchases quickly if demand weakens. Rising depreciation and margin pressure remain real risks. Even so, guidance anchored in a large contracted backlog suggests the capex cycle is increasingly backed by committed demand.
How Amazon and Alphabet Stack Up on AI Capex Returns
Amazon (AMZN - Free Report) and Alphabet (GOOGL - Free Report) are pursuing similarly aggressive AI infrastructure buildouts. Amazon raised its 2026 cash capex outlook to about $220 billion. AWS revenues climbed 37% to $42.2 billion in the second quarter, and its backlog reached $496 billion. Amazon expects capacity to remain short of demand into 2027. Alphabet lifted its 2026 capex guidance to $195-$205 billion, as Google Cloud revenues surged 82% to $24.8 billion. Alphabet's cloud backlog stood at $514 billion, with slightly more than half expected to convert into revenue within 24 months. However, Alphabet's free cash flow turned negative in the second quarter.
MSFT’s Share Price Performance, Valuation & Estimates
MSFT shares have returned 9.6% in the year-to-date (YTD) period against the Zacks Computer – Software industry’s 0.1% return. The Zacks Computer and Technology sector has appreciated 25.4% in the same time frame.
MSFT’s YTD Price Performance
Image Source: Zacks Investment Research
From a valuation standpoint, MSFT stock appears overvalued, trading at a trailing 12-month price/earnings ratio of 30.66X, higher than the industry’s 28.57X. MSFT has a Value Score of D.
MSFT’s Valuation
Image Source: Zacks Investment Research
The Zacks Consensus Estimate for MSFT’s fiscal 2027 earnings is pegged at $19.65 per share. The estimate indicates 9.47% year-over-year growth.
Microsoft Corporation Price and Consensus
Microsoft Corporation price-consensus-chart | Microsoft Corporation Quote
Microsoft currently carries a Zacks Rank #3 (Hold). You can see the complete list of today’s Zacks #1 Rank (Strong Buy) stocks here.