Alphabet's cloud margins expand despite higher AI investments

Alphabet’s second-quarter 2025 earnings call offered investors a clear signal: The tech giant’s aggressive AI strategy is paying off, especially in cloud.

Even as capital expenditures surge to fuel growth in artificial intelligence (AI), Google Cloud’s profitability continues to rise, marking notable progress in the company's long-term pivot from its historical dependence on advertising to infrastructure and enterprise services.

💵💰Don't miss the move: Subscribe to TheStreet's free daily newsletter 💰💵

Google Cloud: profitability with scale

Google Cloud posted $13.6 billion in Q2 revenue, up 32% year-over-year, according to CFO Anat Ashkenazi, driven by growth in “core and AI products at a rate that was much higher than Cloud's overall revenue growth.”

The fast-growing segment's annual run rate now exceeds $50 billion, placing Google firmly in the top tier of hyperscalers alongside Microsoft Azure and Amazon Web Services.

The bigger story wasn’t Google Cloud's top-line growth, but rather its margin expansion. Operating income from the cloud division arrived at $2.83 billion (up from $1.17 billion a year earlier), with operating margin climbing to 20.7%, up from 11.3% in the same year-ago period.

This margin improvement comes even as Alphabet pushes deeper into generative AI workloads, including custom models, infrastructure hosting, and partnerships with enterprise clients. CEO Sundar Pichai has described AI as a “horizontal enabler,” saying, “AI is positively impacting every part of the business.”

Ashkenazi elaborated on the cloud segment's expanding margins, even as the company invests to meet customer demand: “As we ramp our AI investments, we continue to focus on driving improvements in productivity and efficiency to offset growth in technical infrastructure-related expenses, particularly from higher depreciation.”

Google Cloud is expanding operating margins even as it invests heavily in AI growth.

Image source: Smith Collection/Gado/Getty Images

On ramping Alphabet's AI investments, strategic discipline

Alphabet raised its full-year capital expenditure guidance to $85 billion, a sharp increase from prior estimates of $75 billion. Most of the spend will go toward data center expansions, AI chips (TPUs), and technical infrastructure to support both internal needs (like Search and YouTube) and demand from external clients on Google Cloud.

More Tech Stocks:

Despite the spending surge, Pichai emphasized that investments are disciplined and will “have a healthy ROI.” The company is also adjusting depreciation schedules and optimizing server life cycles to reflect near-term cost pressures.

Alphabet's ability to invest aggressively in AI while maintaining healthy margins is one factor that sets it apart from industry peers this quarter. While other tech giants have flagged near-term pressure on margins due to AI-related costs, Alphabet is showing it can both spend and scale responsibly.

Google Search and YouTube remain strong

Though Google Cloud is dominating headlines for its surprising outperformance, Alphabet’s core ad business remains robust. Google Search brought in revenue of $54.19 billion for the quarter, growing 12% year over year, while YouTube Ads revenue jumped 13% to $9.8.

YouTube Shorts is now generating 200 billion daily views, with monetization per watch hour now matching traditional in-stream ads on Youtube, and in some countries, even exceeding in-stream's rate.

AI features such as “Search Generative Experience” (AI Overviews) and “AI Mode” are also gaining traction, with the features reaching two billion and 100 million monthly active users during the quarter, respectively.

These enhancements, while not directly monetized (yet), are designed to protect and extend Alphabet’s dominance in information retrieval, even as user behaviors shift.

To be clear, regulatory headwinds and AI-related infrastructure constraints remain risks going forward. But the Alphabet's ability to simultaneously expand margins, scale AI infrastructure, and drive durable growth across multiples key segments sends a strong message.

Alphabet isn’t just adapting to the AI era. It’s helping define it.