SME Cybersecurity: What the CMA’s Microsoft Software Proposals Mean for Choice and Resilience
The CMA is consulting on whether Microsoft should receive strategic market status for its business software ecosystem. Potential future action concerns AI choice, security software bundling and cloud licensing. For UK SMEs, this is not an instruction to switch suppliers. It is an opportunity to review costs, dependencies, security responsibilities and practical exit options.
SME Cybersecurity and the CMA’s business software proposals
Your SME’s ability to change software suppliers can affect both its costs and its resilience. The Competition and Markets Authority’s latest Microsoft investigation brings that connection into focus, particularly for firms relying on one ecosystem for email, identity, documents, security and AI.
The CMA announcement, published on 16 October 2026, proposes designating Microsoft with strategic market status in its business software ecosystem. Microsoft’s products serve more than one million UK businesses and public sector organisations, with around 20 million monthly users, according to the regulator.
Strategic market status is a designation under the UK’s digital markets regime that can enable targeted competition requirements. It is not a finding of wrongdoing. The CMA’s findings remain provisional, with consultation preceding a final designation decision due by the February 2027 statutory deadline.
What is the CMA investigating?
The CMA investigated five areas: personal computer operating systems, productivity suites, security software, server operating systems and relational database management systems. The last category covers software that stores and manages structured business information.
Its provisional findings identify switching barriers, commercial practices and integration advantages that may constrain customer choice. Its indicative roadmap identifies three areas for further investigation:
* Whether customers can choose competing AI tools alongside Microsoft’s Copilot.
* Whether security product bundling and integration restrict choice.
* Whether software licensing practices affect customers’ cloud deployment options.
These are potential intervention areas, not settled remedies. SMEs should therefore avoid assuming that prices, licence terms or integration options will change immediately.
Why software choice matters to SME resilience
Supplier dependence becomes a resilience concern when changing or losing one service disrupts several essential functions. An SME may use Microsoft for email, document storage, staff authentication and security monitoring. Integration can simplify administration, but it can also concentrate operational dependencies.
Is an integrated platform inherently risky?
No. A well-managed integrated platform may be more secure and affordable than several disconnected services. Fewer administrative interfaces can simplify configuration, monitoring and staff support.
However, convenience becomes problematic when nobody understands the dependencies. If the same identity service controls access to communications, backups and incident records, an outage or compromised administrator account can complicate recovery.
Vendor lock-in means that technical, contractual or operational barriers make switching difficult or expensive. For a small accountancy practice, that might involve document formats, email archives, application integrations, staff retraining and permissions, not simply cancelling a subscription.
The independent SME takeaway is therefore not to reject Microsoft. It is to distinguish useful integration from dependence that the business cannot explain, manage or reverse.
What has changed in cloud services?
Alongside the software investigation, the CMA reports material developments from Microsoft and Amazon Web Services to support cloud choice. These include removing data transfer fees for customers changing providers, reducing certain multi-cloud transfer charges and introducing mechanisms to request greater interoperability.
Interoperability means different systems can work together. The regulator also reports work on AI-assisted switching and connections between providers’ data centres.
However, the CMA says barriers remain. Removing transfer fees does not eliminate application redesign, contractual obligations or the cost of maintaining security during migration. SMEs must check actual service terms rather than treating the announcement as a universal promise of effortless switching.
