Alphabet and Amazon Cloud Growth Tops Microsoft

Alphabet’s Google Cloud is the standout. Revenue jumped 82% in the second quarter, while operating margin climbed to 36%, a sign the business is scaling far more efficiently than it did in prior years. The company is also spending about $200 billion on data centers this year, which should keep its capacity expansion aggressive and its AI-related backlog supported.

Amazon Web Services is growing more slowly than Google Cloud, but it is still accelerating meaningfully. AWS revenue rose 37% in the second quarter, up from growth in the low-20% range a year earlier, showing that Amazon is regaining momentum in a business that still holds the largest market share among the three. Amazon shares recently traded around $249.67, below their 50-day moving average of $256.18, but the stock has regained some ground from earlier weakness.

Microsoft remains the outlier. Azure grew 43% in the quarter, a solid pace, but the growth rate has been stepping up only gradually from 39% and 40% in prior periods. Microsoft shares closed at $516.17 on Sept. 25, above their 50-day moving average of $475.40, but the market is already pricing in a high bar for continued AI and cloud execution.

For investors, the key issue is not just growth, but acceleration. Amazon and Alphabet are showing the kind of revenue and operating leverage that can flow through to companywide profits, while Microsoft’s cloud business is expanding more steadily rather than faster. That makes it harder for Microsoft to close the gap if AI demand keeps tilting toward providers with the most aggressive capacity buildout and the fastest cloud monetization.

The broader backdrop still favors the sector. Google Cloud’s strength, AWS’s rebound and the ongoing data-center spending wave across the industry suggest the cloud wars are moving deeper into an infrastructure cycle where scale, efficiency and AI adoption will decide market share. The next catalyst is the next round of cloud spending and earnings updates, which will show whether Microsoft can reaccelerate or whether Alphabet and Amazon keep pulling away.