Microsoft's AI business is now a $37B run-rate. It nearly tripled in a year. Azure grew 40%. And the company is about to spend $190B in a single year to keep up.
This is a full breakdown of Microsoft's fiscal Q3 2026 - the quarter ended March 31, 2026. Revenue hit $82.9B (+18% Y/Y), the fastest top-line growth in three years. Net income $31.8B. Operating margin 46% even with record AI spend. But free cash flow collapsed to $15.8B as capex hit $30.9B in one quarter and is guided above $40B next quarter. The central question: is Microsoft building the defining infrastructure of the decade, or making the most expensive bet in tech history?
What you'll learn
Why commercial RPO at $627B (+99% Y/Y) is the number that didn't make the press release - but should have
How Azure reaccelerated to +40% while the consensus expected deceleration
Where $46.7B of operating cash actually went, and why FCF got squeezed
What the shift from per-seat to per-seat-plus-consumption pricing does to unit economics
The six metrics that will decide whether the bet works in FY27
Chapters
0:00 Intro
0:12 AI is a $37B run-rate business
0:38 Background - three engines, one bet
2:06 Inside the quarter
2:37 $82.9B revenue
3:26 $627B commercial RPO
4:02 Where the money's coming from
6:06 Azure +40%
7:00 Where the money's going
8:05 $80B in nine months of capex
8:57 $15.8B free cash flow squeeze
9:40 Outlook - Q4 guide and FY27
10:42 $190B calendar 2026 capex
11:57 Bull vs bear
12:31 What to watch next
13:02 A $3.7 trillion company
Bull case
AI run-rate $37B, up 123% Y/Y - more than doubled in twelve months
Azure +40% constant currency, accelerating not maturing, with capacity guided to double in two years
Commercial RPO $627B - the contractual book nearly doubled; +26% even excluding OpenAI
20M paid Copilot seats; seat additions +250% Y/Y; ~90% of the Fortune 500 building agents on Copilot Studio
Operating margin 46%, expanded Y/Y despite record infrastructure spend; headcount actually down
FY27 commitment of double-digit revenue growth on top of this base, with opex growing only mid-to-high single digits
Bear case
Free cash flow just $15.8B - capex now consumes two-thirds of operating cash
$190B in calendar 2026 capex - bigger than Hungary's GDP, with $25B of it pure component-price inflation
Microsoft Cloud gross margin guided down to ~64% as AI infrastructure depreciation bites
Reported bookings -4% (lapping a giant OpenAI commitment) - ex-OpenAI growth only +7%
More Personal Computing in decline; Windows OEM and Xbox both negative
The OpenAI relationship is increasingly customer, partner, and competitor simultaneously
About the company
Microsoft is a roughly $3.7 trillion company - one of the two largest publicly traded firms on Earth - organized into three segments: Productivity & Business Processes (Microsoft 365, LinkedIn, Dynamics), Intelligent Cloud (Azure plus on-prem servers), and More Personal Computing (Windows, Xbox, Search, Surface). Productivity and Intelligent Cloud are now nearly the same size at ~$35B each per quarter. The real peer set isn't other software companies - it's the four or five firms big enough to spend $100B+ a year on physical infrastructure. The thesis Satya Nadella laid out: build the AI infrastructure first, then build the high-value agents on top, as workloads shift from chat to long-running agentic tasks.
Disclaimer: This is earnings analysis for educational purposes, not investment advice. Numbers from public filings and the FY26 Q3 earnings call. Do your own research before making investment decisions.
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