FTC Opens Investigation into Microsoft’s cloud and AI business practices

The Federal Trade Commission has launched a sweeping antitrust investigation into Microsoft, targeting the company’s cloud computing, artificial intelligence, and software licensing operations all at once. The probe involves a civil investigative demand that reportedly runs hundreds of pages, making it one of the most aggressive federal antitrust actions against Microsoft since the government took on Internet Explorer in the late 1990s. Initiated in the final stretch of the Biden administration, the investigation now faces an uncertain political future, but its legal foundation could prove difficult to dismantle regardless of who occupies the White House.

Years in the Making

The FTC did not wake up one morning and decide to go after Microsoft. The agency started pulling at this thread years ago with a broad cloud computing inquiry that invited public comments on how the industry actually works. What came back painted a troubling picture: businesses described being trapped with a handful of dominant providers, facing punishing switching costs, and dealing with security gaps that come from putting too many eggs in one basket. Those complaints became the scaffolding for what would eventually become the Microsoft probe.

In early 2024, the FTC turned up the pressure. Using its Section 6(b) authority, the agency fired off compulsory orders to Alphabet, Amazon, Anthropic, Microsoft, and OpenAI, demanding specifics on investment deals, exclusive arrangements, and how cloud infrastructure and AI models are being woven together. The fact that Microsoft and OpenAI were both named was telling. “As companies race to develop and monetize AI, we must guard against tactics that foreclose this opportunity,” FTC Chair Lina Khan said at the time, warning that the inquiry would “shed light on whether investments and partnerships pursued by dominant companies risk distorting innovation and undermining fair competition.” Regulators were already treating the Microsoft-OpenAI partnership as a case study in how a cloud giant and an AI leader can amplify each other’s market power in ways that leave everyone else scrambling for oxygen.

The Scope Is Staggering

When the formal investigation dropped, it made the earlier inquiries look like a warm-up. According to Bloomberg, the civil investigative demand delivered to Microsoft spanned hundreds of pages and covered cloud computing, software licensing, cybersecurity, and AI services. The Associated Press separately described it as one of the biggest U.S. antitrust matters involving Microsoft in decades. Microsoft has pushed back on the scope of the demand. Spokesperson David Cuddy declined to address the specifics but told ProPublica that the FTC’s request is “broad, wide-ranging, and requests things that are out of the realm of possibility to even be logical.” Still, the agency appears undeterred. This is not the FTC picking at one product or one contract. It is examining whether Microsoft’s entire integrated product ecosystem, from Azure to Office 365 to Copilot, creates structural walls that keep rivals out and customers locked in.

The political angle has dominated headlines, with most coverage focused on whether a future administration will kill the probe. But the more important question is the legal one: Does tying Azure cloud infrastructure to Office licensing and layering AI tools like Copilot on top of both amount to anticompetitive bundling? Consider what it looks like from a customer’s perspective. A company that has migrated its data, workflows, security controls, and now its AI models to Azure faces enormous friction if it wants to leave. Moving to a competitor means retraining staff, rebuilding integrations, and potentially losing access to tools that only work seamlessly within Microsoft’s ecosystem. When switching costs get high enough, they stop being an inconvenience and start functioning as a barrier to competition.

Microsoft’s Rivals Are Talking

The FTC has also gone beyond Microsoft’s own walls. The agency sent civil investigative requests to major competitors in enterprise cloud, asking them to detail, under oath, how Microsoft’s licensing terms and technical integrations affect their ability to compete for customers. These are companies that have spent years griping about Microsoft’s bundling tactics in private. Now they have a chance to put those complaints on the record with legal weight behind them.

The specific grievances are familiar across the industry: Microsoft offers steep discounts when customers bundle Windows, Office, security tools, and Azure together, while the data-transfer fees and building compatibility hurdles make it expensive and painful to use a different cloud provider. By collecting sworn statements and internal documents from competitors, the FTC can determine whether these are one-off frustrations or evidence of a deliberate strategy to box out the competition.

What This Means for Businesses

For the thousands of organizations running their operations on Microsoft’s stack, this probe carries real stakes. If the FTC brings a formal case and wins, remedies could range from banning certain restrictive contract clauses to forcing Microsoft to create clearer separations between Azure, Office, and its AI products. That would give IT departments more freedom to build multi-cloud strategies and pick AI tools from different vendors without penalty.

Even if a formal complaint never materializes, the investigation itself is already shifting the landscape. Microsoft and its competitors know that internal emails, pricing models, and partnership agreements could end up in front of a judge. That kind of exposure tends to make companies rethink their most aggressive tactics before regulators force the issue. For a tech industry that has watched cloud and AI consolidate around a few massive players, the FTC’s willingness to dig this deep sends a signal that the era of unchecked bundling may be running out of runway.