Microsoft beats Q4 earnings on Azure growth; stock up 8% after-hours

Microsoft's Q4 results arrive at a moment when investor confidence in Big Tech's AI spending strategy is being tested. Alphabet and Meta have both signaled that the capex required to build out AI infrastructure will remain elevated, prompting market concerns about whether the return on investment justifies the near-term cash outlay. Microsoft's decision to hold its full-year capex guidance steady—even as quarterly capex doubled to $35.8 billion—suggests the company believes it has found a sustainable level of AI infrastructure investment. This messaging appears to have resonated with investors, who sent the stock up 8% in after-hours trading.

The real driver of confidence, however, is Azure's performance. The 43% year-over-year growth in Azure and related cloud services revenue indicates that Microsoft is not just spending heavily on AI infrastructure; it is converting that spending into revenue growth. The broader Intelligent Cloud segment's 32% revenue growth to $39.3 billion shows that Azure is outpacing the company's other businesses and benefiting from customer demand for AI capabilities. This contrasts with the market's anxiety about capex-heavy competitors and suggests Microsoft has better visibility into monetizing its AI investments.

Despite the strong quarter, Microsoft shares remain down more than 15% over the past year, and the forward price-to-earnings ratio has compressed to 20 from a prior 30. This valuation reset, combined with evidence of both strong AI-driven revenue growth and spending discipline, has led observers to view the stock as attractively valued—particularly relative to peers still working through uncertainty about capex payoff.