Microsoft could face tighter regulatory oversight of its business software ecosystem after Britain’s Competition and Markets Authority (CMA) proposed granting the technology company “strategic market status” on 16 October 2026. The proposal could give the regulator new powers to address concerns about software bundling, competition in artificial intelligence and licensing practices that affect how businesses choose and combine technology services.
The decision follows an investigation launched in May into Microsoft’s position in software used by around 20 million people each month in the United Kingdom. The CMA found that Microsoft held strong positions across several areas of digital activity, including computer operating systems, productivity software, security products, server operating systems and database management systems. It also identified barriers that can make it difficult for customers to switch providers.
The proposed designation does not mean Microsoft has been found guilty of breaking competition law. Instead, it would bring the company’s business software ecosystem within the UK’s special digital markets regime, potentially allowing the regulator to impose targeted requirements intended to improve customer choice and make it easier for competing products to reach users.
For businesses, the implications could extend well beyond the applications employees use every day. Microsoft’s software portfolio includes Word, Excel, Outlook, PowerPoint and Teams, alongside security products, server software and its Copilot artificial intelligence assistant. Many organisations use several of these products together, creating a connected working environment that can be convenient but may also make switching to alternative suppliers more complicated.
The CMA’s concern is that Microsoft’s position across these connected markets could reinforce its ability to retain customers and limit the opportunities available to competing software developers. The regulator said Microsoft’s commercial practices and integration advantages could encourage organisations to adopt its products while creating barriers that rival providers struggle to overcome.
Sarah Cardell, chief executive of the CMA, said business software and cloud services underpin workplaces throughout Britain, including small businesses and essential public services.
“Organisations should be able to choose the products that work best for them, switch provider when they want to and combine services from different suppliers.”
Cardell said the regulator wanted businesses to have greater freedom to use Microsoft products alongside alternatives. The proposed designation is intended to support that objective, although the specific interventions that might follow have not yet been finalised.
One of the central areas under examination is software bundling. Microsoft offers products that work together within its wider business software ecosystem, and organisations may find it easier to purchase and manage several services from the same provider. Bundled packages can also offer commercial advantages compared with buying separate products from different suppliers.
However, the CMA is examining whether these arrangements can make it harder for competing providers to win customers. A business already paying for Microsoft products may be reluctant to purchase a rival application if doing so means duplicating licensing costs or maintaining separate systems. Technical integration between Microsoft products can also make it more difficult to introduce alternatives without additional expense or disruption.
The regulator is considering whether commercial arrangements or technical design choices restrict the ability of other providers to compete. If Microsoft receives strategic market status, the CMA could explore requirements aimed at improving interoperability, enabling customers to combine products from different suppliers and preventing bundling practices from unduly limiting competition.
Artificial intelligence is another major focus. Microsoft has integrated Copilot into parts of its software ecosystem, placing AI assistance alongside familiar applications and workplace tools. This gives users access to AI features within services they may already use for documents, spreadsheets, communication and other tasks.
The CMA wants to assess whether customers can freely choose which AI tools they use and whether competing AI providers have a fair opportunity to reach business customers. If organisations increasingly access AI through established productivity software, the way those services are integrated and licensed could influence which providers gain users.
The regulator’s investigation is therefore concerned not only with the current software market but also with how established technology platforms may shape competition as AI becomes more widely used in workplaces. Its findings could influence the conditions under which alternative AI tools integrate with Microsoft products and compete for customers.
Microsoft rejected the CMA’s assessment of its position. A company spokesperson said its products were designed to work with other services and that customers were not restricted to using Microsoft technology alone.
“All our products, including Copilot, are open and interoperable, giving customers the ability to use them alongside competing services.”
That position highlights the difference between technical interoperability and effective competition. A product may be capable of working with competing services, but regulators may still examine whether licensing arrangements, bundled prices, default settings or other commercial practices make alternatives harder to adopt in practice. The CMA’s consultation will allow Microsoft and other interested parties to respond to the regulator’s provisional conclusions.
The investigation also covers security software and the relationship between Microsoft’s licensing practices and customers’ cloud choices. The CMA is examining whether bundling security products limits customer choice and how Microsoft’s licensing arrangements affect the options available to organisations deploying software across cloud platforms.
These issues matter because businesses increasingly combine services from multiple cloud providers rather than relying on a single supplier. Their ability to move software and data between providers can affect costs, resilience and negotiating power. Restrictions that make switching difficult can leave customers with fewer practical options, even when alternatives exist.
The CMA separately reported progress in its engagement with Microsoft and Amazon Web Services (AWS) on cloud services. Both companies have taken steps intended to improve customer choice, including connecting their data centres with rival providers and removing data-transfer fees for customers switching cloud providers. The regulator nevertheless said more work was needed to address remaining barriers to switching and using multiple cloud services.
Microsoft welcomed the CMA’s acknowledgement that its position in cloud services did not currently justify a separate strategic market status designation under the digital markets regime. AWS also welcomed the update and said it had continued investing in AI, multicloud and open-standard capabilities designed to give customers greater control over their technology.
The proposed business software designation is part of the UK’s broader effort to use its Digital Markets, Competition and Consumers Act 2024 to address competition concerns involving large digital platforms. Under this framework, strategic market status can allow the CMA to consider tailored conduct requirements and other interventions where the relevant legal tests are met.
If the proposal is confirmed, Microsoft would become the third company subject to the UK’s new digital market powers. Alphabet-owned Google has been designated in online search, while Google and Apple were designated in mobile platforms in October 2025. In June 2026, the CMA imposed new conduct requirements on Google’s search services, including greater transparency around search rankings and measures allowing publishers to prevent their content from being used to power Google’s AI features.
The precedent shows how designation can lead to closer oversight, but it does not mean every company will face identical requirements. Any measures directed at Microsoft would depend on the regulator’s assessment of its business software ecosystem and the specific competition concerns it identifies.
The CMA is now consulting on its proposed decision and has invited interested parties to submit their views by 5pm on 13 November 2026. It expects to make a final decision by 13 February 2027. The regulator has also published an indicative roadmap outlining areas where it may gather further evidence and consider possible interventions if Microsoft is designated.
For Microsoft, the process creates uncertainty over how some of its software products could be bundled, licensed or integrated in the future. For business customers, the potential benefits would depend on whether any resulting measures make it easier to compare products, adopt alternatives and move between providers without excessive cost or technical disruption.
For competing software and AI companies, the outcome could influence how easily their products reach organisations that already rely on Microsoft’s ecosystem. Greater interoperability and fewer barriers to switching could create opportunities, although the effects would depend on the final rules and how they are implemented.
The immediate development is a proposed regulatory designation, not a final finding of wrongdoing or an order requiring Microsoft to change its products. The consultation and final decision will determine whether the CMA obtains the additional powers it is seeking and what specific interventions may follow.
The wider question is how regulators can preserve the convenience of integrated software ecosystems while ensuring that customers retain meaningful choices. As AI becomes more deeply embedded in business applications, the outcome of the UK investigation could help shape how competition is managed across productivity software, AI tools, security services and cloud computing.