Microsoft shares climbed 7% in after-hours trading, with the bulk of the rally arriving in the final minutes following the company's capital expenditure headlines rather than its earnings beat.

The financial results were strong. Fourth-quarter adjusted earnings per share reached $4.74, well above the $4.24 consensus estimate, while revenue of $90.0 billion surpassed the expected $87.6 billion. Full-year profit totaled $133.7 billion, representing 31% year-over-year growth. However, the quarter benefited from a $0.27 EPS uplift, primarily driven by a $3.2 billion gain on Microsoft's investment in Anthropic — a notable line item given that Microsoft's deepest AI partnership remains with OpenAI — along with lower-than-anticipated retirement program costs. Excluding that benefit, the results still constituted a decisive beat.

The cloud segment provided the core substance of the report. Azure and other cloud services grew 43% in Q4 — Microsoft's fiscal year ends in June — with Q1 guidance set at approximately 45% growth in constant currency. The company also indicated that H1 FY27 is expected to accelerate relative to H2 FY26. Achieving acceleration at this scale is notable for a hyperscaler business, particularly one already operating at Microsoft's volume.

Azure surpassed $100 billion in annual revenue for the first time this fiscal year, crossing a threshold that underscores its position alongside Amazon Web Services and Google Cloud as one of the three dominant global cloud platforms. Total cloud revenue for the year exceeded $214 billion.

Nearly 90% of cloud revenue originates from customers outside frontier model companies, a figure that directly addresses concerns about circular revenue patterns — the recurring question of whether hyperscaler AI revenue is sustained by payments flowing to and from a small number of model developers. Contract backlog excluding OpenAI rose 25% in Q4, further preempting that line of criticism.

The capital expenditure framing is what ultimately drove the stock. Calendar 2026 capital expenditure will be approximately $175 billion, with FY27 capex at the same level. While these are substantial figures, the CFO emphasized that spending plans remain unchanged, with the higher number reflecting a lease accounting reclassification. Q1 capex will exceed $50 billion. Notably, the $175 billion figure appears lower than the previously guided $190 billion, but the two numbers are effectively equivalent once lease reclassifications are accounted for. At minimum, it does not represent another upward revision — a signal in an environment where escalating hyperscaler capex guidance has been a recurring source of investor anxiety.

Crucially, Microsoft expects to remain free cash flow positive in FY27.

That commitment carries significant weight in the current environment. Meta, which reported the same evening, saw its free cash flow decline 91% alongside an open-ended commitment to compute growth extending into 2028 and beyond, resulting in a 12% sell-off. Microsoft is spending at a comparable scale but paired its outlook with demand that "continues to exceed available capacity," new capacity that was "quickly monetized" upon deployment, and an assurance that free cash flow will remain positive. Microsoft also operates a mature cloud business with a demonstrated ability to scale.

The contrasting market reactions to these two companies amount to a clear A/B test of investor sentiment — one that suggests the market is differentiating not by how much companies are spending on AI infrastructure, but by whether that spending is paired with visible demand and cash flow discipline.

One item warrants scrutiny: effective at the start of FY27, Microsoft is extending the estimated useful life of its data centers and office buildings from 15 years to 25 years. The CFO stated that the change affects only the timing of depreciation and yields minimal benefit to FY27 operating income. While that characterization is likely accurate, lengthening depreciation schedules on assets central to the debate over AI hardware obsolescence is a deliberate decision that will favorably influence all future margin comparisons. The company also disclosed that approximately two-thirds of the quarter's capex was directed toward short-lived assets, meaning the servers themselves are not subject to the 25-year treatment.

On an evening when the Dow fell 1,110 points and Meta shares dropped sharply, a 7% rally suggests the market is drawing a clear distinction within the AI trade — or that Microsoft's expectations had been heavily discounted heading into the report.