Shares jumped 5% to $557.60 after Microsoft delivered a fiscal first quarter that silenced, at least temporarily, the debate over whether its massive AI bet is paying off. Revenue was $92.3 billion, up 19% year over year, with operating income rising 21% and diluted EPS of $4.92, beating expectations across the board. The question now is whether the sheer cost of feeding this growth engine will eventually catch up.
Azure's Fastest Growth in Two Years Validates the AI Spending Thesis
Azure posted 48% year-over-year revenue growth to $33.2 billion — the platform's fastest rate in at least two years.
Wall Street had expected roughly 45% in constant currency, the target management itself had guided. The three-point beat matters because it shows enterprise customers aren't just experimenting with AI — they're converting demand into recurring cloud spend rather than one-off projects.
Management said demand still exceeds available capacity , a supply constraint that, paradoxically, suggests more growth is bottled up.
The Bill Is Enormous — and Growing
Capital spending on property and equipment hit $39.4 billion in the quarter, more than double a year ago.
Free cash flow fell 27% to $18.6 billion as AI infrastructure spending outpaced cash generation.
Notably, total capex of $45.2 billion (including leases) still came in below the ~$51.7 billion analysts expected , giving bulls a second reason to cheer: Microsoft is growing faster while spending less than feared.
Next Quarter's Guidance Says the Acceleration Isn't Over
Microsoft forecast Azure growth of 49%–50% next quarter and overall revenue of $96 billion–$97.1 billion.
That's despite some third-party capacity deliveries slipping into the second half, and after adding 24 data centers across five continents this quarter alone. If guidance holds, it would mark a third consecutive quarter of accelerating Azure growth.
Operating Margins Hold Steady at 50% — For Now
Operating margins ticked up slightly to 50%, driven by revenue growth and platform efficiency gains, partially offset by a sales mix shift toward Azure , which carries lower margins than software subscriptions. That mix shift is the long-term tension: the faster Azure grows, the harder it becomes to expand profitability, even as absolute profits climb.
The bottom line: Microsoft is converting its AI infrastructure investment into accelerating revenue growth faster than anyone expected. But with capital spending on track to approach $170 billion annually, investors are effectively underwriting a bet that demand stays insatiable.