Alphabet is pulling ahead of Amazon in the race to dominate AI cloud computing, with its Google Cloud business growing nearly twice as fast as Amazon Web Services. While both tech giants are investing hundreds of billions of dollars to build out artificial intelligence infrastructure, Alphabet's 48% cloud revenue growth in the fourth quarter of 2025 significantly outpaces Amazon's 24% growth rate, suggesting the search company is winning with customers hungry for AI workloads .

How Are Alphabet and Amazon Approaching Their AI Infrastructure Bets?

• Capital Expenditure Scale: Amazon is planning approximately $200 billion in capital expenditures for 2026, while Alphabet is forecasting between $175 billion and $185 billion, both massive investments to meet surging customer demand for AI computing power .
• Cloud Revenue Momentum: Alphabet's Google Cloud generated $17.7 billion in quarterly revenue with 48% year-over-year growth, now operating at an annual run rate exceeding $70 billion, while Amazon Web Services posted $35.6 billion in quarterly revenue with 24% growth .
• Business Integration: Alphabet benefits from AI enhancing its entire ecosystem, from search results to YouTube recommendations, while Amazon's cloud advantage is more narrowly focused on its Web Services division .

The difference in growth rates reveals something important about how these companies are positioned in the AI era. Amazon Web Services remains a powerhouse, but Alphabet's cloud business is accelerating faster, suggesting the search giant's AI investments are translating more directly into customer demand .

What's Driving Alphabet's Faster Cloud Growth?

Alphabet CEO Sundar Pichai highlighted a crucial insight in the company's fourth-quarter update.

"AI is driving an expansionary moment in our core search business," noted Sundar Pichai, CEO of Alphabet.

Sundar Pichai, CEO of Alphabet

This observation captures why Alphabet's cloud growth is outpacing Amazon's. The search company isn't just selling cloud infrastructure; it's leveraging AI to enhance its most profitable business, creating a virtuous cycle where improved search results drive more user engagement and advertising revenue .

Meanwhile, Alphabet's consolidated revenue reached $113.8 billion in the fourth quarter, up 18% year-over-year, with its core Google Services business (which includes search) growing 17% in the same period. This demonstrates that AI isn't just a future opportunity for Alphabet; it's already delivering tangible results across the company's existing operations .

Which Company Offers Better Value to Investors Right Now?

Both Alphabet and Amazon have seen their stock prices decline roughly 13% year-to-date as of March 2026, making them appear attractive after the recent tech sector pullback. However, valuation metrics reveal a meaningful difference between the two .

Alphabet trades at a price-to-earnings ratio of approximately 25, while Amazon carries a slightly higher multiple of around 28. Combined with Alphabet's superior cloud growth rate, this valuation gap suggests Alphabet offers a more compelling entry point for investors betting on the AI infrastructure boom .

The risk for both companies is real, though. If the payoff from their massive infrastructure build-outs takes longer than anticipated, profit margins could face pressure as capital expenditures continue to mount without proportional revenue gains. Amazon reported net sales of $213.4 billion in the fourth quarter, up 14% year-over-year, demonstrating solid overall business health, but the company's cloud growth acceleration from 20% in Q3 to 24% in Q4 suggests it's still ramping up to meet demand .

For investors evaluating these two AI infrastructure plays, the key takeaway is that Alphabet's combination of faster cloud growth, broader AI integration across its business, and slightly cheaper valuation creates a more attractive risk-reward setup in the near term. However, both companies remain essential players in the AI infrastructure race, and the ultimate winner will depend on execution over the next several years as they deploy these enormous capital budgets.