Cloud Giants Win Over Investors as AI Demand Surges
Generative AI has triggered a historic buildout of data centers, chips and power capacity, pressuring free cash flow at the hyperscalers even as demand continues to exceed supply. Morgan Stanley estimates Amazon, Alphabet and Microsoft are on track to invest a combined $1.4 trillion, but projects returns on invested capital of roughly 25% to 50%. Their scale, customer reach and control of computing infrastructure increasingly make them institutional investors’ favored long-term beneficiaries.
Microsoft reported on July 29 that quarterly revenue reached $90 billion, while Azure grew 43% and cloud backlog climbed to $678 billion. On July 30, Amazon said second-quarter AWS revenue rose 37% to $42.2 billion and lifted its 2026 capital-spending plan by 10% to $220 billion. AWS backlog reached $496 billion, and most of its 2027 capacity is already reserved. Synovus Trust said the results reinforced AWS’s market lead and eased concerns about overspending.
All Coverage
1 original reportsThe Backstory
The history behind this eventBig Tech Boosts AI Spending as Free Cash Flow Comes Under Pressure
Amazon, Microsoft, Alphabet and Meta have made data centers, advanced AI chips and power infrastructure central to their push into generative artificial intelligence. The buildout is expanding computing capacity and supporting cloud growth, but it is also extending investment payback periods. That has shifted investor attention from the scale of AI ambitions to capital efficiency and the companies’ ability to convert new capacity into sustainable revenue and free cash flow.
The four U.S. cloud giants have spent more than $1.1 trillion in aggregate since the AI investment cycle began and are expected to commit about $745 billion in 2026, largely to data-center construction and advanced chip purchases. Despite mounting pressure on near-term free cash flow, the companies plan to keep increasing investment in the second half of 2026 and over the coming quarters, putting greater scrutiny on utilization, AI revenue growth and returns on capital.
Subscribe to Mark Radar Weekly
Every Friday, the week's strongest signals in your inbox. Unsubscribe anytime.
If you search news on Google, you can set Mark Radar as a preferred source—our coverage will show up more often in your results. Set as preferred source on Google →