Digital Sovereignty: Why Switch From Microsoft 365 to Alternatives?

Unilateral messaging cut-offs, repeated price increases, dependency on U.S. law… Warning signals are multiplying for European organizations. In 2026, the question is no longer whether digital sovereignty is an issue, but how to implement it effectively. Insights are provided by Jamespot.

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Digital Sovereignty: Europe’s Awakening to Technological Dependencies

Astonishing figures from a 2025 study by Asterès for Cigref reveal that 80% to 83% of total professional software and cloud service expenditures in Europe are dominated by American companies, amounting to over 260 billion euros annually. This structural dependency leaves Europe increasingly vulnerable.

Public sector leaders have become aware of this. According to the 2025 NumSpot barometer with Ifop, 81% of respondents now opt for sovereign cloud solutions when using public cloud exclusively. Even more telling, the same proportion highlights the impact of geopolitical tensions on their strategic decisions.

The escalation of international conflicts, along with a realization of the risks posed by American extraterritorial laws such as the Cloud Act, is prompting organizations to rethink their technological independence. Beyond cost concerns, it’s about controlling one’s own data and regulatory compliance.

We don’t just proclaim digital sovereignty; we practice it, claims Alain Garnier, CEO of Jamespot.

Microsoft 365: An Ecosystem Facing Pressure

The International Criminal Court incident starkly illustrated these risks. In February 2025, the Trump administration imposed sanctions on the ICC in response to investigations against Israeli officials. As a direct consequence, prosecutor Karim Khan had his professional email account terminated by Microsoft, forcing him to switch to the secure messaging service Proton, reports Next.ink.

Nicolas Guillou, a French judge at the ICC and one of the 11 magistrates sanctioned by the Trump administration, detailed the extent of these sanctions in an interview with Ouest-France. This situation demonstrates Microsoft’s ability and willingness to enforce U.S. government directives, including suspending services to entities deemed undesirable by Washington—a wakeup call for European organizations reliant on these infrastructures.

This legal vulnerability is compounded by economic pressure. Le Monde Informatique reports a planned price increase in July 2026 that could reach up to 25% for certain configurations, with increases varying between 8% and 33% for business and government clients. And this adjustment is not an isolated event; Microsoft has raised its prices several times in recent years, citing the integration of AI features as justification.

Furthermore, reversibility remains a sensitive issue. Migrating to Microsoft 365 commits an organization to a closed ecosystem where services are closely integrated (Exchange, Teams, SharePoint, OneDrive…). Exiting this environment involves a complex, costly, and operationally disruptive project.

Jamespot: A Collaborative Platform Built for Sovereignty

In response to these challenges, French alternatives have matured. Jamespot, a publisher active for over 20 years in the market, offers a collaborative platform that meets the sovereignty requirements of both public and private organizations, now used by over 400,000 users worldwide.

The solution is built on four functional pillars: a corporate social network for cross-functional collaboration, an intranet for downward communication, a dedicated office suite for individual productivity enhanced with a personal AI assistant for each user, and a multi-LLM platform to frame and secure the deployment of generative AI in organizations.

In terms of regulatory compliance, the publisher achieved ISO/IEC 27001:2022 certification from AFNOR in June 2024, covering all its SaaS services. The platform also offers hosting certified by SecNumCloud and HDS (Health Data Hosting) through its sovereign cloud partners, and the company obtained the France Cybersecurity label in 2026.

On the infrastructure front, Jamespot relies on a multi-cloud approach with major French and European cloud players: 3DS Outscale, Scaleway, OVHCloud. This diversity allows clients to choose their level of sovereignty according to their sector-specific constraints.

Migrating from O365 isn’t just a change of tools: it’s taking back control over your data, costs, and digital trajectory, insists Alain Garnier.

Asserting Structural Independence

Beyond certifications, the very governance of the company ensures its technological independence. Jamespot is an editor entirely owned by its founders. There are no American funds in its capital, nor is there dependence on underlying GAFAM software components.

This autonomy is reflected in deployments. The platform equips several central administrations (DGE, MTES) as well as agencies like ANCT or DGAFP. The CNAM (National Health Insurance Fund) remains among the major references for the publisher, engaging nearly 80,000 users in the French collaborative solution. Its founder, Alain Garnier, has been involved for years in the French sovereign ecosystem, as the founder of EFEL and PlayFrance.Digital, and a member of Euclidia.

With the CollabNext project, supported as part of the France 2030 plan and led by a consortium of 10 French partners, Jamespot aims to offer a complete alternative to Microsoft 365 and Google Workspace. Hosted on the infrastructure of 3DS Outscale, certified SecNumCloud, the CollabNext solution revolves around a central hub: Team Work, Jamespot’s office suite. Organizations can then enrich it with partner solutions from the publisher to tailor a digital environment fully aligned with their practices and goals.

The interoperability with the existing IT ecosystem is a key argument: the platform integrates with company directories, business tools (CRM, ERP), and can coexist with hybrid environments during a gradual transition. A pragmatic approach that allows organizations to gradually regain control of their digital destiny.

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