Alphabet edges Amazon in AI race; faster growth, cheaper valuation

Amazon and Alphabet are the two largest players among the big four AI hyperscalers (cloud providers), yet they are pursuing different strategies in the race to capture AI and cloud computing opportunity.

Amazon's business, while globally known for e-commerce, derives outsized profit from its cloud division. AWS generated $37.6 billion（約6兆円） in revenue during Q1 and grew at a 28% rate. Crucially, despite AWS accounting for only 21% of Amazon's total sales, it produced 59% of the company's operating profit in Q1, a testament to AWS's far higher margins compared with Amazon's commerce segments. The disparity suggests that as AWS continues to grow, its share of overall profits will likely rise. Alphabet, by contrast, remains a conglomerate anchored in advertising—a high-margin business already—but it also operates Google Cloud, a smaller but rapidly expanding cloud division. Google Cloud generated $20 billion（約3.2兆円） in Q1 revenue and is growing at a 63% rate, outpacing AWS in growth rate but starting from a much smaller base. Google Cloud does not deliver the same profit leverage for Alphabet that AWS provides for Amazon, since advertising already operates at premium margins. Both companies are betting heavily on cloud and AI, spending hundreds of billions of dollars annually on data center capital expenditures to build computing capacity and capture market share.

One structural difference is that Alphabet has a native generative AI model—the Gemini family—that integrates with its Google Cloud ecosystem, whereas Amazon does not have a native model and instead allows customers to deploy a variety of third-party AI models on its platform. While other AI models can run on Google Cloud, the article notes that Gemini's native status makes it a logical choice for users already embedded in Alphabet's ecosystem, though this is not described as a "huge difference maker."

On growth and valuation, Alphabet outpaces Amazon on both fronts. In Q1, Alphabet grew revenue at 22%, while Amazon grew at 17%. Looking ahead, Wall Street expects Alphabet to deliver 21% revenue growth for the remainder of 2026 and 19% in 2027, while analysts project 15% growth for Amazon in 2026 and 13% in 2027. Earnings per share also skyrocketed for both companies, with Alphabet's growth once again outpacing Amazon's. On valuation, Amazon trades at a higher forward price-to-earnings multiple than Alphabet. The article attributes Amazon's valuation premium to its more stable e-commerce business, which faces fewer cyclical downturns than Alphabet's advertising business, which can suffer severe slowdowns during recessions or even recession fears. However, the article concludes that Alphabet's faster growth rate and cheaper stock price make it the more attractive buy now, although Amazon remains a worthy long-term investment.

Amazon and Alphabet represent two distinct approaches to dominance in cloud computing and AI. Amazon built AWS into the world's largest cloud service, now generating $37.6 billion（約6兆円） in Q1 revenue, but its core identity remains tied to e-commerce—a business that generates lower margins and slower growth (17% revenue growth in Q1). Alphabet, by contrast, remains anchored in advertising, which already commands high margins; its cloud division (Google Cloud, $20 billion（約3.2兆円） in Q1 revenue) is smaller but expanding at a 63% clip, a rate that reflects both its smaller base and the genuine acceleration in AI and cloud demand. Both companies are responding to this opportunity by spending hundreds of billions annually on data center capital expenditure, a bet that computing capacity for AI will drive returns over a multi-year horizon.

The valuation divergence reflects investor perception of these growth trajectories. Alphabet's faster top-line expansion (22% in Q1 versus Amazon's 17%, with Wall Street forecasting a persistent 2–6 point lead through 2027) and lower forward price-to-earnings multiple create a more compelling entry point for new buyers. Amazon's premium valuation likely reflects the stability of its e-commerce business—less cyclical than advertising, which can face severe downturns during recessions or even recession fears—but that defensive quality does not outweigh Alphabet's growth advantage on current metrics. The one structural advantage Amazon may claim is AWS's existing scale and installed base; Alphabet's native Gemini model integration offers a mild countervailing benefit, though the article notes this is not a "huge difference maker." For investors, the data points to Alphabet as the better buy now, though Amazon remains a solid long-term holding.