New Delhi, July 30 -- The cloud war has a leader, and the quarterly filing that confirmed it arrived this week. Azure's annual revenue crossed $100 billion for the first time in Microsoft Corp. MSFT's fiscal year ended June 30, a figure that redraws the competitive map for Amazon Web Services and Google Cloud and gives Chief Executive Satya Nadella the single data point his company has been building toward since its original bet on OpenAI. For enterprises that signed long-term cloud contracts in 2024 betting on which platform would carry their AI workloads, the math just got harder to argue with.

Microsoft reported revenue of $90.0 billion for the fourth fiscal quarter, a gain of 18 percent from a year earlier, as disclosed in the compan...