UK Competition Authority Launches Formal Investigation Into Microsoft's Business Software Empire, Targeting Cloud Licensing and AI Bundling
The CMA will begin a Strategic Market Status investigation in May, examining whether Microsoft's licensing practices disadvantage rival cloud providers and whether AI integration into productivity tools could entrench dominance.
Overview
The United Kingdom’s Competition and Markets Authority announced on March 31, 2026 that it will launch a Strategic Market Status (SMS) investigation into Microsoft’s business software ecosystem, according to the CMA’s official announcement. The probe, set to begin in May and lasting up to nine months, will examine whether Microsoft’s licensing policies for products including Windows Server, SQL Server, and Office 365 unfairly disadvantage rival cloud providers and whether the rapid integration of AI tools such as Copilot risks further entrenching the company’s dominance in enterprise software.
The announcement marks the most significant regulatory escalation Microsoft has faced in the UK cloud market and arrives alongside voluntary commitments from both Microsoft and Amazon to reduce cloud egress fees and improve interoperability for UK customers.
What We Know
The CMA’s investigation centers on a structural concern identified during its 2025 cloud services market investigation: Microsoft’s licensing model allows customers to reallocate on-premises licenses to Azure at no additional cost, a flexibility that does not extend to rival platforms such as AWS and Google Cloud, as reported by The Register. Google has previously claimed that this arrangement makes it up to five times more expensive for enterprises to migrate legacy workloads to non-Microsoft clouds, according to The Register.
The 2025 market investigation found that both Microsoft and Amazon each hold between 30 and 40 percent of the UK infrastructure-as-a-service market, and that high data egress fees and limited interoperability between providers restrict customer switching and multi-cloud adoption, according to The Register.
Beyond cloud licensing, the CMA flagged concerns about AI integration reshaping competition in productivity software. Hundreds of thousands of UK businesses and public sector organizations rely on Microsoft’s suite daily, and as AI assistants and agentic technologies become embedded in those tools, the regulator wants to ensure a level playing field among providers, according to the CMA.
CMA Chief Executive Sarah Cardell stated that the authority is “using the regime in a flexible, pragmatic way to deliver real impact, as quickly as possible,” according to the CMA. She emphasized that an SMS designation would provide the legal authority to impose conduct requirements and pro-competition interventions.
Voluntary Commitments
Alongside the investigation announcement, both Microsoft and Amazon offered concessions intended to address some of the CMA’s cloud competition concerns.
Microsoft pledged to extend its free data transfer period from 60 to 180 days for customers leaving Azure, broaden its definition of “switching” to include exiting individual Azure services rather than requiring a complete departure, and launch a dedicated interoperability request mechanism for rival cloud providers within six months, according to The Register.
Amazon separately committed to its AWS Interconnect multicloud service, launched in November 2025, which enables dedicated private data transfers between clouds at flat pricing with no transfer fees, according to The Register.
Microsoft Vice Chair and President Brad Smith said the company would “implement all these changes promptly” and characterized the cloud market as “intensely competitive,” noting that Google — which has been among the most vocal critics of Microsoft’s licensing practices — grew faster than both Amazon and Microsoft in the final quarter of 2025, according to Microsoft.
What We Don’t Know
The CMA has not yet determined whether Microsoft will receive a formal SMS designation. The investigation will begin in May and could take up to nine months, during which the regulator will issue a provisional view before reaching a final decision. If Microsoft is designated, the CMA would gain the power to impose binding conduct requirements — but the scope and severity of any such measures remain undefined.
It is also unclear whether the voluntary commitments from Microsoft and Amazon will be deemed sufficient to resolve the underlying structural concerns. The CMA’s board will review progress in six months, and the regulator has signaled that further enforcement measures remain possible if the concessions fall short.
The investigation’s focus on AI bundling introduces additional uncertainty. The CMA has identified the rapid embedding of AI tools like Copilot into Microsoft’s business software as a potential competition risk, but has not specified what remedies it might seek in this area.
Analysis
The CMA’s decision to pursue a formal SMS investigation, rather than accepting Microsoft’s voluntary commitments at face value, signals that the UK regulator views the cloud licensing issue as a structural problem that market-level pledges alone may not resolve. The investigation arrives at a pivotal moment: enterprise customers are increasingly locked into decisions about cloud infrastructure that will define their AI strategies for years to come, and the CMA appears concerned that Microsoft’s licensing architecture could shape those decisions in ways that limit competition.
The inclusion of AI-related concerns represents a forward-looking dimension to the probe. As Copilot and similar AI agents become more deeply embedded in everyday business workflows, the line between productivity software and cloud infrastructure continues to blur. A regulator with SMS powers over Microsoft’s business software ecosystem would have a mechanism to address competitive imbalances that emerge from that convergence — a capability that may prove more significant than any single licensing remedy.