CMA Designates Microsoft as Gatekeeper in Business Software
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Key Takeaways
- Strategic Market Status is a regulatory instrument under the Digital Markets, Competition and Consumers Act 2024, which came into force on 1 January 2025 and serves as the UK equivalent of the European Digital Markets Act.
- The CMA investigated Microsoft's position across five enterprise software areas and concluded that Microsoft holds a strong and entrenched position.
- The proposed designation could enable regulatory interventions in the bundling, pricing and integration of Microsoft products.
- A public consultation runs until 13 November 2026 at 17:00, with a final decision expected in February 2027.
- Microsoft disputed the CMA's findings, arguing that all its products are open and interoperable and customers can freely choose between alternatives.
- Regulatory interventions in the UK could have a ripple effect for other jurisdictions and impair the global scalability of Microsoft's business model.
UK competition authority the Competition and Markets Authority (CMA) announced on 16 October 2026 that it will designate Microsoft with a special Strategic Market Status (SMS) in the business software sector. The authority intends to assign the so-called Strategic Market Status to the company, which would enable far-reaching regulatory interventions in the company's business practices.
What does Strategic Market Status mean?
Strategic Market Status is a regulatory instrument created by the Digital Markets, Competition and Consumers Act 2024 (DMCC Act), which came into force on 1 January 2025. It represents the UK equivalent of the European Digital Markets Act and functions as a targeted ex-ante tool that allows the CMA to intervene preventively in digital markets before anti-competitive structures become entrenched.
An SMS designation requires two statutory assessments: the company must possess significant and entrenched market power in a specific digital activity and hold a position of strategic significance. The latter means that its position could extend market power to adjacent markets or the company acts as a critical gatekeeper between business customers and their own customers.
Additionally, financial thresholds apply: at least £1 billion UK revenue (equivalent to $1.33 billion at the ECB reference rate from 16 October 2026) or at least £25 billion globally ($33.34 billion). According to the CMA's assessment, Microsoft significantly exceeds both thresholds.
Five-month investigation as basis
The CMA had initiated the investigation in May 2026 and over the past five months analysed Microsoft's position across five enterprise software areas. The authority concluded that Microsoft holds a strong and entrenched position – from productivity applications through security suites to database systems. The investigation affects more than 20 million British users who rely on these products monthly.
The CMA emphasised explicitly that the SMS designation does not constitute a finding of misconduct. Instead, it opens the legal framework to impose customised, binding conduct remedies.
Which products are affected?
Potential regulatory interventions could influence how Microsoft bundles products such as Excel, Teams and the Copilot AI assistant. Should the designation be confirmed in February 2027, the CMA could impose requirements on which products British organisations can purchase, at what price and from which supplier.
The proposed designation potentially opens the way for interventions in the bundling, pricing and integration of Microsoft products. Specifically, the authority could require Microsoft to offer certain software components individually or open interfaces to competitors.
Microsoft rejects allegations
Microsoft immediately disputed the CMA's findings. The company stated that all its products are open and interoperable and customers can freely choose between alternatives. The company argues that there is no lock-in effect and competition functions.
Timeline and consultation process
A public consultation on the proposed designation runs until 13 November 2026 at 17:00. During this period, affected companies, industry associations and other stakeholders can submit comments. The CMA published the full case documentation on 16 October 2026.
A final decision is expected in February 2027. Should the CMA confirm the designation, Microsoft would be subject to legally binding conduct remedies from that point onwards, which the authority would subsequently establish.
Risks to the business software division
Regulatory interventions could significantly alter Microsoft's business model in the UK. If the authority intervenes in product bundling or pricing, this could strain margins in the business software division. Mandatory opening of interfaces would also increase competitive pressure and weaken the strategic advantages of the integrated product portfolio.
Furthermore, successful regulation in the UK could have a ripple effect for other jurisdictions. Regulatory authorities in the European Union, the USA or other markets could consider similar steps, which would impair the global scalability of Microsoft's business model.