Microsoft's Cloud Growth Lags Peers Despite Strong AI Run Rate

Microsoft (MSFT) delivered a robust performance for its fiscal third quarter ending March 31, 2026, with revenue increasing 18% year-over-year and operating income growing by 20%. A primary highlight was the company's artificial intelligence business, which has surged to a $37 billion annual run rate, representing a 123% increase. Despite these headline figures, a comparative analysis of the cloud sector reveals a divergence in momentum. Microsoft's Azure and other cloud services grew 40% year-over-year (39% in constant currency). While strong, this represents only a marginal acceleration from previous quarters. In contrast, Amazon Web Services (AWS) saw growth climb to 28% from 24%, and Alphabet's Google Cloud surged to 63% from 48% in the prior quarter. This disparity is particularly concerning given Microsoft's aggressive spending strategy. The company plans to invest approximately $190 billion in capital expenditures during calendar 2026, largely dedicated to cloud infrastructure. The lack of sharp re-acceleration in Azure growth relative to its peers raises questions about the immediate return on this massive investment. Furthermore, the durability of Microsoft's productivity software business is under scrutiny. While the productivity and business processes segment grew 17% to $35 billion, the traditional per-seat licensing model faces structural threats from AI. CEO Satya Nadella has acknowledged that the business must evolve toward a hybrid model combining per-user and usage-based pricing to remain competitive. With Google Workspace intensifying competition for enterprise budgets and a fundamental shift in how software is monetized, investors are weighing whether Microsoft's current growth trajectory justifies its valuation relative to the broader 'Magnificent Seven' group.