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# Microsoft Q3 Preview: Azure Has to Clear 45% While Capex Tops $50 Billion
- URL: https://www.thealphaagentic.com/microsoft-q1-fy27-earnings-preview/
- Published: 2026-10-28T00:00:00.000Z
- Updated: 2026-10-28T16:54:15.000Z
- Description: Microsoft guided Azure to about 45% growth and capex to more than $50 billion for the September quarter. The test on Oct. 28 is whether the extra spending still turns into revenue as fast as Microsoft can plug it in.
- Author: Eli Yang
- Tags: News, AI, Datacenters, Deals & Earnings, Microsoft (MSFT), #pair-microsoft-q1-fy27-earnings-preview

Microsoft (NASDAQ: MSFT) has set a high bar for its September quarter, its fiscal first quarter of 2027\. It guided Azure to grow about 45% in constant currency, faster than the 43% it just posted, and said capital spending would top $50 billion, a quarterly record. Those numbers have to move together. If Azure lands at 45% or better, the spending looks like capacity Microsoft can sell as fast as it arrives. If Azure slips while capex climbs, investors will ask how much of the bill is AI demand and how much is higher chip and memory prices.

Microsoft [will publish](https://news.microsoft.com/source/2026/10/07/microsoft-announces-quarterly-earnings-release-date-69/?ref=thealphaagentic.com) fiscal first-quarter 2027 results after the market closes on Wednesday, Oct. 28\. The [webcast](https://www.microsoft.com/en-us/investor/events/fy-2027/earnings-fy-2027-q1?ref=thealphaagentic.com) starts at 5:30 p.m. ET. Alphabet (NASDAQ: GOOGL) reports the same afternoon and Amazon (NASDAQ: AMZN) on Thursday; our [Hyperscaler Capex Tracker](https://www.thealphaagentic.com/hyperscaler-capex-tracker/) follows all three.

> Key numbers
> 
> **Azure growth:** about 45% in constant currency guided for Q3 2026 (FY27 Q1), against 43% in Q2 2026.
> 
> **Capex incl. finance leases:** over $50 billion guided for Q3 2026, against $41 billion in Q2 2026 and $34.9 billion a year earlier.
> 
> **Revenue guidance:** $89.85 billion to $90.95 billion for Q3 2026, growth of 16% to 17% from $77.7 billion a year earlier.
> 
> **Implied gross margin:** about 67% for Q3 2026 at the midpoints of guidance, by our math, in line with Q2 2026.
> 
> **Commercial RPO:** $678 billion at the end of Q2 2026, up 84%, or 25% excluding OpenAI.
> 
> **Calendar 2026 capex:** about $175 billion, cut in July from roughly $190 billion in April as more data center leases become operating leases.

## The Guidance

Microsoft gave detailed guidance on its [fiscal fourth-quarter call](https://www.microsoft.com/en-us/investor/events/fy-2026/earnings-fy-2026-q4?ref=thealphaagentic.com) in July.

| Metric                     | Year ago(Q3 2025) | Last quarter(Q2 2026) | Microsoft guide(Q3 2026)     |
| -------------------------- | ----------------- | --------------------- | ---------------------------- |
| Revenue                    | $77.7B            | $90.0B                | $89.85B to $90.95B           |
| Azure growth               | 40% (39% cc)      | 43% (43% cc)          | About 45%, constant currency |
| Intelligent Cloud revenue  | $30.9B            | $39.3B                | $40.95B to $41.25B           |
| Capex incl. finance leases | $34.9B            | $41B                  | Over $50B                    |

*Source: Microsoft earnings releases and CFO remarks on earnings calls. Capex including finance leases comes from CFO remarks; the releases report only cash paid for property and equipment.*

Microsoft said the revenue range implies growth of 16% to 17%. Its cost of revenue guide of $29.6 billion to $29.8 billion implies a gross margin of about 67% at the midpoints, by our math, in line with last quarter. CFO Amy Hood said operating margins should be "relatively flat" from a year earlier, when they were about 49%, by our math.

## Azure: The Number That Matters Most

Azure grew 43% in Q2 2026, both as reported and in constant currency, per Microsoft's [earnings release](https://www.microsoft.com/en-us/investor/earnings/fy-2026-q4/press-release-webcast?ref=thealphaagentic.com). Microsoft had guided to 39% to 40% in constant currency. Hood credited efficiency gains across the CPU and GPU fleet and earlier delivery of new capacity. "That additional in-quarter capacity for Azure was quickly monetized," she said. GitHub Copilot usage after a June pricing change also helped.

The constraint has not gone away. "Customer demand continues to exceed available capacity," Hood said. In April, she said Microsoft expected to stay constrained "at least through 2026."

That makes Azure a test of how much capacity Microsoft can switch on in the quarter. A print at or above 45% says the supply chain delivered. A miss would not necessarily mean weaker demand; Hood warned that growth rates "can vary quarter-to-quarter based on capacity timing and contract mix." But a miss paired with capex above $50 billion would be harder to explain. Microsoft still expects first-half Azure growth to accelerate.

## Capex: Over $50 Billion, and an Accounting Change

Capex including finance leases was $41 billion in Q2 2026, Hood said on the call, "including the impact from higher component pricing." Roughly two-thirds went to short-lived assets, mainly CPUs and GPUs. Cash paid for property and equipment was $35.8 billion, up from $17.1 billion a year earlier, per the release.

![Bar chart of Microsoft quarterly capex, rising from $34.9B to a guide of over $50B](https://storage.ghost.io/c/b0/f1/b0f115e2-04db-4451-bca9-8288bfdeb3a5/content/images/2026/10/microsoft-q1-fy27-earnings-preview-capex.png)

Microsoft's capex including finance leases, as given in CFO remarks on each earnings call, has risen from $34.9 billion a year ago to a guide of more than $50 billion. Source: Microsoft earnings calls. Chart: Alpha Agentic

For Q3 2026, Hood guided capex to "over $50 billion," up more than 43% from a year earlier, by our math.

There is a twist. Starting this fiscal year, Microsoft extended the estimated useful lives of its data centers and office buildings to 25 years from 15\. Hood said that has "a minimal benefit" to operating income this year. The bigger effect is on reported capex: more future data center leases will be operating leases, which capex excludes, rather than finance leases, which it includes.

That is why Microsoft cut its calendar 2026 capex figure to about $175 billion in July, from roughly $190 billion in April, while saying its investment expectations were otherwise unchanged. The Q3 2026 guide already includes the reclassification.

**Why it matters:** If more of the build moves into operating leases, the capex line understates the commitment. Watch whether Microsoft repeats the $175 billion and how fast operating lease commitments grow.

**Memory and components:** In April, Hood said about $25 billion of the calendar 2026 plan reflected "higher component pricing." SK hynix (KRX: 000660), Samsung Electronics (KRX: 005930), Seagate (NASDAQ: STX) and Sandisk (NASDAQ: SNDK) report this same week, as covered in our [memory and storage earnings preview](https://www.thealphaagentic.com/memory-storage-earnings-preview-sk-hynix-samsung-seagate-sandisk-q3-2026/). Any update on how much of Microsoft's spend is price, not volume, matters to both sides of that trade.

## Bookings, RPO and the AI Labs

Commercial remaining performance obligation, or RPO, grew 84% to $678 billion at the end of Q2 2026, or 25% excluding OpenAI. Hood said roughly 30% will be recognized as revenue in the next 12 months, about $203 billion by our math. "All sequential commercial RPO growth was driven by commitments from customers outside of frontier model companies," she said. She also warned that large OpenAI contracts signed a year earlier will cause "some quarterly volatility" in bookings and RPO growth.

Anthropic (proposed Nasdaq: ANT) is the other frontier lab in the picture. Its [S-1](https://www.sec.gov/Archives/edgar/data/2130357/000162828026067168/anthropicpbc-sx1.htm?ref=thealphaagentic.com), filed Oct. 26, says it agreed in November 2025 to spend "at least $44.9 billion" with Microsoft between November 2026 and May 2033, "regardless of actual usage." The deal was amended in February and October 2026 and is non-cancelable except for Microsoft's uncured material breach or, per tranche, for undelivered capacity. Neither company says how much of it sits in Microsoft's RPO. Microsoft booked a $3.2 billion gain on its Anthropic investment in Q2 2026\. Our [S-1 analysis](https://www.thealphaagentic.com/anthropic-s1-ipo-analysis-compute-commitments/) covers Anthropic's full set of compute commitments.

**Why it matters:** Spending under the Anthropic deal starts in November, after this quarter. Expect questions on how much of the backlog depends on a few AI labs.

## Short-Lived Assets and Custom Silicon

About half of capex went to short-lived assets a year ago, rising to roughly two-thirds in each of the last three quarters, according to Hood's call remarks. She framed that as a hedge: "if the demand environment changes, you just slow down what is, in fact, the largest component and the driver of COGS." Land and data center builds, she said, are "a smaller percentage of the overall cost structure."

CEO Satya Nadella said Maia 200, Microsoft's own AI chip, delivers "30% better performance per dollar than the latest-generation hardware in our fleet," and expected Cobalt 200 racks in over 25 data centers by the end of July.

**Why it matters:** Short-lived assets depreciate faster. The more Microsoft spends on GPUs, CPUs and memory at today's prices, the more pressure lands on gross margin in coming years. Maia and Cobalt deployment data shows how much it can offset.

**PCs:** Microsoft expects Windows OEM and Devices revenue to fall in the low twenties percent this quarter, with Hood citing lower PC demand "as higher component costs increase device pricing."

## The Bull Case and the Bear Case

**Bull case:** By Microsoft's own account, demand still exceeds supply, and new capacity sold as soon as it arrived last quarter. RPO of $678 billion gives unusual visibility. Short-lived assets let Microsoft slow spending quickly if demand turns, and custom chips could protect margins.

**Bear case:** Capex is rising faster than revenue: more than 43% versus 16% to 17%. Part of the increase is component prices, not capacity. The lease change makes the capex line smaller than the commitment. Backlog leans on a few AI labs, and fast-depreciating assets could weigh on margins for years.

## The Alpha Take

This quarter is about conversion. Microsoft has told investors what to expect: Azure near 45%, capex above $50 billion and roughly flat operating margins. The question is whether each extra dollar of hardware still becomes Azure revenue within the quarter.

The memory makers reporting the same week are the other half of the story. Microsoft has already put a number on what their price increases cost it: about $25 billion this calendar year. A clean Azure beat would suggest Microsoft can absorb those costs. A miss alongside record capex would suggest the AI build is getting more expensive faster than it is getting more profitable. For how another big spender is pacing, see our [Meta Platforms (NASDAQ: META) third-quarter results](https://www.thealphaagentic.com/meta-q3-2026-earnings-results/). This is analysis, not investment advice.

## What to Watch

**Azure versus about 45%:** Constant-currency growth, and whether Hood still calls Microsoft capacity constrained.

**Capex versus over $50 billion:** The total, finance leases and cash paid for property and equipment.

**The $175 billion:** Whether the calendar 2026 figure holds, any early word on 2027, and how much the useful-life change moves commitments into operating leases.

**Gross margin:** Whether it holds near the roughly 67% implied by guidance, and how fast depreciation is rising.

**RPO and bookings:** Growth with and without OpenAI, and any comment on the Anthropic commitment.

**Component costs:** Any update on the about $25 billion of higher component pricing in the 2026 plan.

**Q4 2026 guide:** Azure and capex guidance for Q4 2026, Microsoft's fiscal second quarter.