UK competition regulator opens strategic market status investigation into Microsoft’s business software ecosystem
The Facts
- The UK Competition and Markets Authority has launched a strategic market status investigation into Microsoft’s business software ecosystem.
- This is the fourth strategic market status investigation opened by the CMA since the UK’s digital markets competition regime came into force in January 2025.
- The investigation will examine whether Microsoft’s practices in business software, including bundling products, limiting interoperability and using default settings, may reduce competition or make it harder for customers to switch to alternatives.
- Products named in the inquiry include Windows, Word, Excel, Teams and Copilot.
- The CMA says Microsoft’s business software is used by hundreds of thousands of UK businesses and public sector organisations, with more than 15 million commercial users across its ecosystem in the UK.
- If Microsoft is designated as having strategic market status, the CMA would be able to take targeted action, and multiple reports say that designation would also allow the regulator to intervene in the cloud market.
- The investigation will also look at how third-party or rival AI services can integrate with Microsoft’s business software.
- A key unresolved question is whether the CMA will ultimately designate Microsoft with strategic market status after gathering evidence from businesses, customers, rivals and challenger tech companies.
How left and right are reading this
- Both agree
- Microsoft’s reach across UK businesses and public bodies makes any bundling, interoperability, default-setting, or AI integration practices consequential if they are found to hinder switching or competition, and both framings treat the evidence-gathering process as central to what comes next.
- They split on
- Less a disagreement than a question of emphasis: the scale of potential competitive harm and the broader regulatory implications if Microsoft is designated, versus the need to establish through evidence first whether a strategic market status designation is justified.
Context
What is the CMA investigating?
The CMA is examining Microsoft’s business software ecosystem to decide whether the company should be designated with strategic market status in this area. It is looking at whether bundling, interoperability limits and default settings may be restricting customer choice or weakening competition gov.uk,Computer Weekly,Verdict.
Why does this matter beyond Microsoft’s core software products?
Several reports say an SMS designation would give the CMA power to impose targeted measures on Microsoft and would also allow it to intervene in the cloud market, where the regulator has previously raised concerns about Microsoft’s software licensing practices Reuters,CNA,CNA.
Who could be affected by the outcome?
The inquiry matters to UK businesses, public sector organisations, Microsoft’s rivals and challenger tech firms because Microsoft’s software is widely used across workplaces and government bodies, and the CMA says it wants evidence from customers, competitors and other market participants gov.uk,TechRadar,Mirage News.
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