Cloud Capex to Cash: AWS Wins This Way, Alphabet Wins Another Way

Amazon and Alphabet are engaged in an unprecedented capital expenditure race to build out artificial intelligence infrastructure, presenting distinct monetization dynamics for investors. In Q2 FY2026, Amazon Web Services (AWS) generated $42.2 billion in revenue, reflecting a 36.7% year-over-year increase and an operating margin of 39%, while expanding its backlog to $496 billion. Meanwhile, Google Cloud accelerated its top-line growth to 82% year-over-year, delivering $24.77 billion in revenue, driven by broad enterprise adoption of Gemini. However, both tech giants face soaring capital requirements that led to negative free cash flow during the quarter. Amazon spent $53.1 billion in cash capex, largely financed via $45.4 billion in operating cash flow and debt, while Alphabet deployed $44.92 billion in capex, raising debt and pausing share buybacks. AWS offers proven segment profitability and a massive multi-year backlog, whereas Alphabet delivers rapid revenue expansion and full-stack integration, leaving market participants to weigh heavy infrastructure spending against long-term cash flow conversion timelines.