Microsoft Corporation MSFT

Key data

The business

Microsoft sells three things that all lead to the same place. It rents computing power and AI services by the hour on Azure, its cloud. It sells Office, now Microsoft 365, and its business apps as yearly subscriptions to nearly every large company on earth. And it owns Windows, LinkedIn, Xbox and the Copilot assistants stitched across all of it. The money is made twice over: a company signs a multi-year cloud contract, then spends more each year as its data and workloads deepen, which is expensive and painful to unwind once the business runs on it. That switching cost is the moat, and it is why a customer who joins rarely leaves. Beginning in fiscal 2027 the company will report as just two segments, Agents and Infra and Devices and Consumer, a tell that management now views the whole firm as AI infrastructure with everything else attached. The concrete thing a customer holds is an Azure bill and an Office login the entire organization already depends on.

The numbers

Growth is accelerating off an already enormous base, which is rare at this size.

Revenue climbed every quarter to a record $90.0B in the June quarter. The December quarter's $5.16 per share was elevated versus the $4.27 to $4.80 range of the surrounding quarters. Earnings have landed above Wall Street's estimate for four quarters running.

Earnings per share compounded about 17% a year since FY2022, and faster lately: FY26 revenue rose 18% and net income 31%. The cash tells the harder story. Operating cash flow rose 34% to $182.9B, yet capital spending jumped 80% to $115.9B, so free cash flow actually fell to $67.0B from $71.6B a year earlier. A concern flagged days ago, that free cash flow keeps sliding while capex keeps climbing, held true this year: the buildout is still eating more cash than it frees.

The order book is the real tell. Commercial remaining performance obligation grew 84% to $678 billion, roughly four times a single year's revenue and far ahead of the 18% top line. That gap is the earliest sign that demand already signed has not yet reached the income statement. The thing this memo believes the market underweights is that this backlog converts and re-accelerates cloud revenue as capacity comes online; the print that settles it is Microsoft Cloud growth holding in the high-20s or better as capex peaks.

Management

Insiders are net sellers by a wide margin: 15 sales worth $66.2M over the past year against a single $2.0M purchase. CEO Nadella sold $28.9M across two transactions on September 1, and the vendor feed does not carry 10b5-1 status, so plan status is not disclosed on these; read the Form 4 footnotes before drawing intent from the timing. Capital allocation is disciplined and expensive: the company bought back $22.3B of stock in FY26 at roughly 28 times earnings, a full price to pay for its own shares. Returns on capital stay elite, with return on equity near 33% and return on invested capital near 21%, so even the AI buildout is being funded off a business that still earns far above its cost of capital. Full CEO compensation detail is not in this data.

How it fails or surprises you

The backlog lands and cloud re-accelerates (right tail). $678B of signed commitments, up 84%, sit well ahead of 18% revenue. If Azure capacity comes online and converts even partway, cloud growth reaccelerates past the high-20s and the 28x multiple looks cheap in hindsight. The market prices the trailing number, not full conversion. Watch Microsoft Cloud revenue growth over the next two quarters.

The buildout stops paying in cash. Capex jumped 80% to $115.9B and free cash flow fell despite a 34% rise in operating cash. This is the fact the case for owning it explains least well. If cloud growth cools while depreciation from these assets floods the P&L, both margins and free cash compress at once. Watch capex still rising year over year alongside a falling Microsoft Cloud gross margin.

Seats stop growing as AI reprices Office. M365 Commercial cloud grew 17% on more seats at higher prices. If Copilot adoption plateaus or AI lets customers do more with fewer seats, that engine decelerates quietly. Watch Microsoft 365 commercial seat growth, disclosed each quarter, rolling toward the mid-single digits.

Closing thoughts

The question is whether the $678B backlog converts fast enough to justify the spending. Watch Microsoft Cloud revenue growth: if it holds in the high-20s while capex peaks this year, the buildout is working and 28 times is cheap. If it slides toward 20% while spending keeps climbing, demand is not keeping up and the multiple will compress. The deeper bet is that AI is real infrastructure, not a cycle that reverses, a $3.7 trillion company compounding earnings at 17% needs that to be true. The balance sheet can survive being wrong, but the upside is bigger: the backlog is signed commitments, not forecasts, so if it converts, cloud re-accelerates and earnings estimates rise. The risk is another year of falling free cash with rising capex; that would force the market to reprice earnings quality, not just growth.

The bet is still that companies keep moving their software and data onto Microsoft's cloud and now rent its AI to run on top, and the orders already signed turn into real sales as the new data centers switch on. It breaks if free cash flow keeps falling while capex keeps rising and cloud growth cools at the same time. The one pair to watch is Microsoft Cloud revenue growth against capital spending: if the first is decelerating a year from now while the second is still climbing, the buildout is not paying and the premium is no longer earned.