The European Commission isn't breaking up with Microsoft Teams. But it's definitely keeping options open.
Tucked into a technical presentation at an open-source conference last October, a Commission official outlined something unusual: a parallel messaging system, built on Matrix—the federated protocol that's become something of a digital sovereignty movement for governments wary of Redmond's reach. Not a replacement. A backup. Infrastructure insurance, if you will, for the day when the primary system goes dark or becomes, well, problematic.
In early February 2026, a Commission spokesperson made it official, sort of. The EC is indeed preparing "an internal communication solution based on the Matrix protocol as part of our efforts to use more sovereign digital solutions," they said. Teams stays put. Signal—currently the fallback—hasn't scaled well enough. The Commission's words, not ours.
For those tracking the slow-motion rethinking of Big Tech dependencies across European capitals, this isn't exactly a surprise. Nicolas Dubois, representing the Commission, laid out the pilot at Matrix Conference 2025 back in October, describing plans for "resilient and sovereign communications" within Brussels' bureaucratic machinery. The Register caught his careful phrasing: no plans to replace Teams. Just... contingency planning.
Which raises the question: contingency for what, exactly?
The Infrastructure They're Building
Element—the company that's become the de facto enterprise face of Matrix—says the Commission is evaluating its Element Server Suite and Element X. The requirements tell you something about what keeps Brussels IT officials up at night: advanced identity management, cross-institution federation, support for air-gapped environments. There's also talk of using Matrix for emergency notifications, potentially ditching SMS for something more secure and resilient when things go sideways.
And here's where it gets interesting. The Commission suggested the system might extend beyond its own walls to other EU institutions. Not just Commission staff. The entire Brussels apparatus. Shared infrastructure for a bloc that's grown increasingly nervous about foreign dependencies.
Matrix itself is federated messaging with end-to-end encryption—think Signal's security model, but with the architecture of email. Organizations host their own servers, control their data, decide who they talk to, and can operate entirely offline if geopolitics demand it. Unlike WhatsApp or Signal, which funnel everything through centralized infrastructure, Matrix lets institutions run the show.
That control comes at a price, though. Operational complexity. Enterprise-grade identity systems. Security hardening. Support infrastructure that vendors like Element provide but that pure open-source deployments have to build from scratch.
Timing Is Everything
Context matters here, perhaps more than the Commission expected. In March 2024, the European Data Protection Supervisor ruled that the Commission's use of Microsoft 365 violated data protection law for EU institutions. The EC eventually brought its M365 deployment into compliance by the December deadline, but the episode left a mark. Dependency had consequences.
Then came October 2025. AWS went down, taking cloud-hosted services across Europe with it. Signal, which runs on AWS infrastructure, sputtered. For an institution that coordinates crisis response and manages sensitive diplomatic channels across 27 member states, that's the kind of failure that focuses minds.
Brussels' ongoing antitrust case against Teams bundling adds another layer. Slack filed the original complaint back in 2020. Microsoft has since unbundled Teams from its productivity suite in Europe, but the competitive dynamics have kept Teams under sustained political and regulatory pressure. Not the most comfortable position for a tool that's become mission-critical infrastructure.
The sovereignty framing runs deeper than just infrastructure resilience, though. The Commission has championed open-source software as part of its digital autonomy strategy since 2020. And this January, Brussels Signal reported French officials expressing "deep concern" over the EC's Microsoft dependency. Member states are watching. Taking notes.
A Movement, Not an Outlier
France has already gone further. Over 600,000 public officials use Tchap, a Matrix-based system that's become the de facto standard for government communications. France's digital agency DINUM became a Silver member of the Matrix.org Foundation at last year's conference. Paris is also rolling out "Visio," a domestic open-source videoconferencing platform meant to replace Teams and Zoom by 2027.
Germany has its own play: TI-Messenger (TIM), a national Matrix deployment for healthcare, plus Element/Matrix packaged into openDesk—billed as a "digital sovereign" alternative to Microsoft 365 for public administration. Sweden, Luxembourg, NATO, and UNICC all sent representatives to Matrix Conference 2025's public sector track, according to Element's post-conference summary.
Computer Weekly noted in October 2025 that European governments are increasingly pivoting toward open-source alternatives to Big Tech encrypted communications, driven by sovereignty concerns and, bluntly, geopolitical incidents that exposed single points of failure.
This isn't fringe anymore.
The Messy Reality of Dual Systems
Here's a practical problem nobody's quite solved: how does a Matrix backup coexist with a Teams primary? Element launched a managed Teams bridge in 2021—letting Matrix users chat with Teams via messages, groups, even voice and video. But Element's documentation now quietly states the Teams bridge is "no longer available for purchase," though maintained for existing customers. Community-developed bridges using Microsoft's Graph API exist, but interoperability isn't seamless by default.
The Commission's requirements suggest they're less interested in integration than independence. Cross-institution federation, identity management, air-gapped capability—that's infrastructure designed to function autonomously when needed, not necessarily to play nice with everyday Teams workflows.
Which tells you something about what they're planning for.
What Brussels Is Really Signaling
For enterprise IT leaders and government technology strategists, the EC trial represents a test case for de-risking vendor concentration. It's also revealing about where sovereign infrastructure priorities sit in 2026: not replacing commercial SaaS entirely, but building parallel capacity under institutional control. Options, in other words.
Matrix's advantage for public sector use is straightforward: control. Organizations self-host, set federation policies, operate offline. The tradeoff? Operational complexity that requires the kind of enterprise-grade infrastructure and support that vendors like Element provide—but that open-source purists have to build themselves.
Security scrutiny is real, too. Wired documented serious end-to-end encryption vulnerabilities in Matrix that have since been patched. Wire, a competing secure messaging vendor, has criticized Matrix's federation architecture as posing GDPR metadata risks and called out Element's Secure Border Gateway as proprietary—hardly the open-source ideal.
Still, momentum is clear. European system integrators including Adesso, BearingPoint, Bechtle, Dataport, Deutsche Telekom, and IBM are working on Matrix deployments across the continent, according to Element. The protocol has moved from niche open-source project to infrastructure alternative for governments actively rethinking their communication stack.
The Hedge
The Commission's trial isn't a declaration of independence from Microsoft. It's insurance. A recognition that resilient institutions need options when primary systems fail, face compliance issues, or become geopolitically risky.
Whether Matrix scales to become a genuine alternative or remains a permanent backup depends on how this trial unfolds—and whether other EU institutions follow Brussels' lead. But the fact that the Commission is building it at all says something about the world European officials think they're living in now.
A world where backups aren't paranoia. They're planning.
