The UK’s Competition and Markets Authority (CMA) proposed on October 16, 2026, to designate Microsoft with strategic market status (SMS) for its business software ecosystem in the UK. This designation would allow the CMA to impose specific rules on bundling practices, switching barriers and AI tools. Microsoft serves over one million organisations in the UK, accounting for approximately 20 million monthly users. The public consultation runs until November 13, 2026, with a final decision expected by February 13, 2027. This is the fourth SMS investigation launched under the UK’s digital markets framework.
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