Most Investors Overlook MSFT's AI Moat. I Think That's a Mistake.

When I look at Microsoft (NASDAQ: MSFT) today, I do not think of it as a tired software giant. I feel like some of the internet conversation around the company today just views it as a PC company. What too many views don't account for is Microsoft's artificial intelligence (AI) connections.

To me, Microsoft is a company that has built one of the strongest AI moats in the market, which makes it a good buy.

The numbers help support this underrepresented view. In fiscal 2026, Microsoft delivered about $331 billion in revenue, with revenue growth of up to 18% driven by demand across Azure and its cloud applications. Data from the latest quarter showed Azure and other cloud services revenue up around 40% year over year, and in the fourth quarter, Azure grew 43%, beating analyst expectations near 40%. That growth is now closely tied to AI, not just generic compute.

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Microsoft's AI moat

What gives Microsoft an AI moat is where the AI lives. Microsoft has more than 450 million commercial Microsoft 365 users. Copilot sits inside that base. Paid Microsoft 365 Copilot seats have crossed 30 million, with large customers rolling the product out across their workforces. Each Copilot subscription rides on top of existing Office licenses, which turns AI from a bolt-on project into a feature of daily work. That is very different from a developer tool used by a small group inside one company.

The AI run rate number makes that concrete. In its third quarter call, Microsoft said its AI business had reached a $37 billion annual revenue run rate, up 123% from a year earlier. That includes Azure AI services, Copilot for Office and GitHub, and other AI offerings. https://news.microsoft.com/source/2026/04/29/microsoft-cloud-and-ai-strength-fuels-third-quarter-results/ When I see double-digit billions in recurring AI revenue growing at triple-digit rates within a company that already dominates enterprise software, I see a moat forming.

Microsoft will be spending money

Of course, this moat is not free. Microsoft is planning around $175 billion of capital expenditure for calendar 2026 after an accounting shift, most of it aimed at data centers, GPUs, and supporting infrastructure. That number would worry me if the spending were ahead of demand. So far, revenue and backlog suggest the opposite. Intelligent Cloud revenue has been growing near 30%, remaining performance obligations have climbed, and AI services keep pulling more workloads onto Azure. To me, this looks like a company that is laying rail for trains that already run, not building track in empty fields.

I also pay attention to how customers talk about Microsoft. Banks, manufacturers, and public agencies speak of Azure and Copilot as default choices when they move more work into AI-powered workflows. Developers can run open models or partner tools on Azure AI, but the glue that holds everything together is Microsoft’s platform. That gives the company a position to support many model providers while still owning a large share of the AI layer.

I think Investors are starting to see this. Microsoft has regained a strong buy consensus after a short period of concern about AI spending. Analysts at companies such as J.P. Morgan now set price targets in the mid-$500 range for 2027, based on assumptions that Azure growth can remain near or above 40% and that Copilot usage continues to rise.

So, is Microsoft a good buy? I think it is, as long as you see it through the right lens. This is not only a dividend payer or a safe mega cap. It is an AI infrastructure and productivity platform with deep roots in enterprise software and a growing habit of turning that position into recurring AI revenue. In my portfolio, that combination is exactly what I want from a core holding, which is why I believe most investors overlook Microsoft’s AI moat at their own risk.

Micah Zimmerman has no position in any of the stocks mentioned. The Motley Fool has positions in and recommends Microsoft. The Motley Fool has a disclosure policy.