Microsoft's fourth-quarter earnings report for the fiscal year ending June 30, 2024, provided a clear answer to the question investors have been asking: is the company's massive investment in artificial intelligence actually paying off? The numbers suggest a resounding "yes" — with important caveats.
Revenue rose 18% year-over-year to $90 billion, while net income climbed 31% to $35.8 billion. The star performer was Microsoft Cloud, which brought in $59.3 billion in revenue, up 27% from the same quarter last year. Shares of the technology giant rose about 2% in after-hours trading as the market digested the results.
Azure reaccelerates
The figure that investors watch most closely is Azure, Microsoft's flagship cloud computing platform, and it did not disappoint. Azure and other cloud services grew 43% year-over-year, ahead of the 40% that analysts had expected. This marked an acceleration from the previous quarter's 40% growth rate, according to reports. For the full financial year, Azure passed the $100 billion revenue mark for the first time in its history.
This acceleration is particularly significant because Microsoft has been grappling with a shortage of computing capacity. The company has been so stretched for data center resources that it has had to ration its powerful chips — especially those used for AI workloads — between paying Azure customers, its own internal research teams, and the Copilot AI assistant integrated across its products. Growing at 43% through that capacity squeeze is the quarter's real signal that demand is not just strong but overwhelming.
Behind this growth is a broad shift in enterprise computing. Companies are moving not just their traditional workloads to the cloud but also their most demanding generative AI applications. Microsoft has positioned itself as the go-to platform for enterprises that want to build custom AI applications using OpenAI's models, which are hosted exclusively on Azure. This strategic bet, which began with a multi-billion dollar investment in OpenAI, is now bearing fruit as companies rush to deploy AI chatbots, content generation tools, and data analysis services.
The backlog is broadening
One of the most encouraging signs in the report is the broadening of Microsoft's commercial backlog — the revenue it has already booked but not yet recognized. This backlog jumped 84% year-over-year to $678 billion, an enormous figure that indicates strong future demand. Importantly, Microsoft noted that the quarter's sequential growth came from customers other than the large foundational model developers — meaning the demand is becoming more diversified beyond OpenAI itself.
This diversification matters because of the concentration risk that has worried some analysts. Microsoft disclosed in January that about 45% of its backlog was tied to OpenAI, its largest AI partner and customer. If that one partner were to falter or reduce its spending, the impact on Microsoft's cloud business could be significant. But the latest numbers show that other enterprises — from financial services to healthcare to manufacturing — are increasingly signing up for long-term cloud commitments that include AI services.
Paid seats for Microsoft 365 Copilot, the AI assistant that works inside Word, Excel, PowerPoint, and other Office applications, passed 30 million, up from 20 million just a month earlier. This rapid adoption suggests that businesses are finding real productivity gains from AI assistants, and that Microsoft's strategy of integrating AI into its existing productivity suite is working well.
The bill keeps climbing
The cost of that growth is not falling, however. Microsoft spent $35.8 billion on property and equipment in the quarter alone — more than double the $17 billion it spent a year earlier. For the full fiscal year, capital spending reached about $116 billion, a staggering sum that reflects the company's massive investment in data centers, GPUs, and networking equipment to support AI workloads.
Investors have been uneasy about exactly this trajectory. Microsoft's stock is down 19% year-to-date (as of the earnings release date) as spending climbed, and rivals including Amazon Web Services, Google Cloud, and Meta Platforms are pouring similar sums into AI infrastructure. There is a real risk of overcapacity if demand does not continue to grow at the current pace. The relief in the small after-hours pop — the 2% gain — reflects a sentiment that, for now, revenue is keeping pace with the outlay.
The competitive landscape is intensifying. Amazon Web Services is expanding its own AI offerings, including its Bedrock platform for building generative AI applications with multiple models. Google Cloud is investing heavily in its own custom chips and in the Gemini family of AI models. Meanwhile, startups like CoreWeave — which builds cloud infrastructure specifically for AI — are raising billions in capital to challenge the established players. Microsoft's ability to maintain its lead in the AI cloud race will depend on continued execution and on the broader adoption of AI in the enterprise.
Good, but not great
The profit jump needs an asterisk. Net income grew 31% on paper, but a one-time gain of $3.2 billion on Microsoft's stake in the AI lab Anthropic helped lift the bottom line. On the company's own measure that strips out its OpenAI investment fluctuations, profit grew 22% — still strong, but not the headline number. Microsoft also benefited from lower costs thanks to its first voluntary retirement program, which reduced headcount expenses, though this was partly offset by a writedown on its Xbox gaming business after slowing hardware sales.
So the read is mixed. AI cloud demand is clearly real and broadening beyond the initial hype cycle. Enterprises are committing to multi-year cloud deals that include AI services, and Microsoft's deep integration with OpenAI gives it a unique advantage in the market. But the spending that fuels this growth keeps rising, and the build-out of data center infrastructure still needs paying for. The next few quarters will be critical to see whether Microsoft can sustain this pace of revenue growth without letting capital spending spiral out of control.
Other segments also performed well. Microsoft's productivity and business processes segment, which includes Office 365 and LinkedIn, saw revenue increase 12% to $20.3 billion. LinkedIn revenue grew 10% as the professional networking platform continued to see strong advertising and recruitment revenue. The more personal computing segment, which includes Windows, Xbox, and Surface devices, saw a modest 3% revenue increase to $15.9 billion, as PC market recovery remained sluggish and Xbox hardware sales declined. The AI story is clearly the centerpiece of Microsoft's narrative right now, and it is working.