The UK's competition regulator is poised to begin a significant review of Microsoft's dominance in the cloud computing market.
This potential assessment revolves around designating Microsoft with 'Strategic Market Status' (SMS), a powerful new tool under the UK's Digital Markets, Competition and Consumers (DMCC) Act. This isn't about punishing past actions; instead, it's a forward-looking regime designed to set rules of conduct for tech firms with entrenched market power to ensure fair competition. For Microsoft, this could mean new obligations on how it operates its cloud business.
This development is not a surprise, but rather the logical next step in a long-running investigation. First, the CMA's 2025 final report on the cloud services market explicitly concluded that competition was “not working well.” It directly recommended that the CMA Board prioritize an SMS investigation into Microsoft and AWS, setting a deadline for early 2026 to decide. Today's news aligns perfectly with that timeline.
Second, the CMA has already proven it can and will use its new SMS powers. In 2025, it successfully designated Google for both its search and mobile platforms. This precedent shows that the SMS regime is fully operational, making the potential designation of Microsoft a credible and high-likelihood event, not just a theoretical threat.
Third, international regulatory pressure is building. The US Federal Trade Commission (FTC) recently widened its own probe into Microsoft's cloud and AI practices. This parallel scrutiny from another major regulator strengthens the case for the UK to act, creating a multi-front challenge for Microsoft.
While Microsoft’s direct UK cloud revenue is relatively small—about $4 billion—the real risk lies in the potential global ripple effect. Remedies imposed in the UK, such as forcing fairer software licensing terms for competitors or reducing barriers for customers to switch providers, could become a model for regulators in the EU and US. Such changes could impact the growth of Microsoft's highly profitable Azure division worldwide.
- Strategic Market Status (SMS): A designation under UK law for tech firms with substantial and entrenched market power, allowing regulators to impose forward-looking rules of conduct.
- Competition and Markets Authority (CMA): The UK's primary competition and consumer authority, equivalent to the FTC in the US.
- Digital Markets, Competition and Consumers (DMCC) Act: The 2024 UK law that created the SMS regime to regulate digital markets.