AI Demand Drives Big Tech Cloud Growth; Supply Bottlenecks Replace Demand as Constraint; Competition Diverges

In recent months, the market has focused on how big tech companies are earning returns on their massive artificial intelligence investments. With the latest earnings reports rolling in, cloud computing has emerged as the primary profit driver of this spending spree. Cloud units at Amazon, Microsoft, and Alphabet, Google's parent company, are all growing quickly amid the AI boom. The latest results show that customers, including AI labs and large enterprises, are continuously renting chips and computing equipment. The main factor now limiting business expansion is not market demand but production capacity.

Amazon's cloud unit, AWS, reported an operating margin of 39% for the second quarter of 2026. CEO Andy Jassy said the company recovers its cost on computing hardware in less than three years on average, and most compute contracts with AI customers run for over five years. AWS's quarterly revenue grew 37% year over year, Microsoft's Azure cloud business grew 43%, and Alphabet's cloud business grew 82% year over year. After the earnings release, Amazon and Microsoft added a combined market value of about $950 billion. Alphabet's stock rebounded about 10% over the past week.

Large contracts between enterprise customers and cloud providers are driving revenue and backlog growth. In April 2026, AWS signed a 10-year contract with Anthropic worth more than $100 billion. Beyond AI demand, the broader trend of enterprises moving computing workloads to the cloud also continues.

Microsoft and Google's cloud businesses are growing faster than Amazon's, challenging AWS's traditional leadership in the industry.

Meta, after reporting earnings and slightly raising the midpoint of its 2026 capital expenditure range, saw its stock fall about 5%. CEO Mark Zuckerberg said the company is considering building its own cloud business.