CMA opens Strategic Market Status investigation into Microsoft business software

The UK Competition and Markets Authority has opened a Strategic Market Status investigation into Microsoft’s business software ecosystem, marking another major step in the country’s digital competition regime.

The investigation will examine Microsoft’s position across workplace software products widely used throughout the UK economy, including productivity software, personal computer and server operating systems, database management systems, security software and its growing AI assistant ecosystem, including Copilot. The CMA said more than 15 million commercial users across the UK rely on Microsoft’s software ecosystem.

Regulators will assess whether Microsoft has Strategic Market Status in business software and whether its position may limit customer choice. The CMA said it will examine concerns linked to product bundling, interoperability limits and default settings that could make it harder for businesses and public-sector organisations to switch providers or combine Microsoft tools with competing products.

The authority will also examine how competing AI services can integrate with Microsoft’s business software as workplace tools increasingly incorporate AI and agentic AI functions. The CMA said customers should be able to access software and AI services from a range of suppliers rather than being locked into a single ecosystem.

Cloud competition concerns are also linked to the probe. An SMS designation would allow the CMA to consider targeted interventions related to Microsoft’s software licensing practices, which were previously identified as reducing competition in cloud services.

The CMA will gather evidence from Microsoft, customers, rivals, challenger technology firms and other stakeholders before deciding whether to designate Microsoft with Strategic Market Status. The regulator said the investigation does not assume wrongdoing and that any future interventions would depend on the evidence and relevant legal tests.

Why does it matter?

The investigation shows how digital competition oversight is moving deeper into enterprise software, cloud infrastructure and AI-enabled workplace tools. As products such as Copilot become embedded in systems used by businesses and public services, regulators are increasingly treating interoperability, bundling and switching costs as strategic competition issues rather than narrow technical questions.

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