Microsoft AI Spending Surge Sparks Investor Jitters Despite Solid Azure Growth

Microsoft rattled investors after reporting record artificial intelligence spending alongside slower-than-expected cloud growth, raising concerns about when its massive AI investments will meaningfully pay off. Following the release of its fiscal second-quarter earnings, Microsoft shares fell 6.5% in after-hours trading, reflecting growing unease on Wall Street.

The technology giant disclosed that it has spent more than $200 billion on AI since the start of fiscal 2024, including $37.5 billion in capital expenditures in the latest quarter alone. Nearly two-thirds of that spending went toward advanced computing chips. While Microsoft’s total revenue rose 17% year over year to $81.3 billion, costs increased even faster, fueling worries about long-term profitability as AI infrastructure expenses climb.

Azure cloud revenue grew 39% during the October–December quarter, narrowly beating analyst expectations. However, Microsoft’s forecast of 37% to 38% growth for the next quarter suggested continued deceleration, even as competition from Google’s Gemini and other AI platforms intensifies. Investors had hoped Microsoft’s early partnership with OpenAI would translate into a clearer competitive advantage and faster financial returns.

Microsoft owns a 27% stake in OpenAI, whose technology underpins products such as M365 Copilot. For the first time, CEO Satya Nadella revealed that M365 Copilot has reached 15 million annual users, highlighting growing demand for enterprise AI assistants priced at $30 per user per month. Nadella emphasized that much of Microsoft’s AI spending supports its own products, which have historically delivered strong lifetime value.

Despite these reassurances, Microsoft’s reliance on OpenAI remains a concern. About 45% of its cloud backlog is tied to OpenAI contracts, even as the startup gains flexibility to work with other cloud providers. Overall, Microsoft’s cloud backlog more than doubled to $625 billion, underscoring strong demand, though excluding OpenAI, backlog growth was a more modest 28%.

As Microsoft, Alphabet, Meta, and Amazon collectively prepare to spend over $500 billion on AI this year, investors are increasingly scrutinizing whether Big Tech’s AI ambitions will generate sustainable returns. While Microsoft insists AI adoption is still in its early stages, patience in the market appears to be wearing thin.