Sovereign Digital Workplace: How Public Administration Combines Cloud, Collaboration, and Sovereignty

In this article, you'll read 

• why it is important for public administration to consider alternatives to US software,
• which sovereign digital workplace solutions are available on the German market
• and the strengths and weaknesses of each solution.

The digitalization of public administration has been a major topic of discussion in recent years and has become a key priority on the agendas of both federal and state governments. Alongside initiatives such as electronic records management and the Online Access Act, the digital workplace is a central component of administrative modernization. Without modern tools for communication, collaboration, and document management, efforts to digitize public administration remain incomplete. At the same time, concerns are growing about new forms of dependency, particularly when organizations rely on international cloud and collaboration platforms.  

As a result, the digital workplace has become a strategic issue. How can public authorities work efficiently while maintaining control over their data, processes, and technologies?

An incident in May 2025 transformed theoretical discussions about a potential "kill switch" into reality. At the request of the Trump administration, Microsoft reportedly disabled the workplace account of Karim Khan, Chief Prosecutor of the International Criminal Court (ICC). The incident highlighted the institution's dependence on Microsoft technology and raised concerns about its ability to operate independently under such circumstances.

Technology dependence is increasingly becoming a tool for exerting political pressure. These developments are prompting decision-makers across Europe to reassess their workplace strategies. The digital workplace is evolving into a critical component of state IT sovereignty—not only from a data protection and regulatory perspective, but also as a matter of operational resilience.

Open and sovereign IT solutions strengthen the digital independence of public administration. The ICC has reportedly responded to these concerns by deciding to replace Microsoft technology. According to Handelsblatt (October 2025), the international institution based in The Hague, the Netherlands, plans to adopt a German solution in the future. This development provides a compelling reason to examine the sovereign workplace solutions currently available on the market. In the following sections, we present three offerings: openDesk, Sovereign Desk, and Nextcloud Hub. We also discuss open-source collaboration as a modular approach for organizations seeking a more customized solution. 

These offerings provide complete workplace suites that combine multiple open-source collaboration tools into integrated user experiences. While they share the goal of delivering sovereign digital workplaces, they differ in their user interfaces, architectures, and underlying technologies.

openDesk, which the ICC also plans to adopt, is an office and collaboration suite developed by ZenDIS specifically for public administration on behalf of the Federal Ministry of the Interior. It brings together proven open-source applications for email, calendars, word processing, file management, and chat within a single platform that users can access through one login. openDesk can be deployed as a Software as a Service (SaaS) solution via the cloud infrastructure of a German hyperscaler, including T Cloud Public. As a SaaS offering, it scales effectively and is therefore suitable for smaller organizational units. Alternatively, openDesk can also be hosted in an organization's own data center.

openDesk is currently one of the most widely adopted sovereign workplace solutions on the market. It integrates tools from various providers through a unified identity and access management server, providing users with a single point of access. At the application level, tools such as Jitsi and Nextcloud retain their full native functionality. However, the individual applications are connected only loosely through APIs. Single Sign-On (SSO) serves as the primary integration layer, which means that the platform does not provide a fully unified user experience. In addition, openDesk does not support multi-tenancy. 

SovereignDesk is a solution developed by Hessian govIT for the portfolio of ekom21, a municipal IT service provider in the German state of Hesse. It offers an open collaboration platform specifically designed to meet the needs of municipalities and state administrations in Germany.

The solution is highly standardized, can be deployed quickly, and provides end-to-end support, from planning and implementation through ongoing operations. As an open-source solution, it also helps minimize vendor lock-in. SovereignDesk is designed to meet current data protection requirements by design, ensuring that control over data and processes remains in public hands.

SovereignDesk uses some of the same underlying technologies as openDesk but integrates them more tightly to deliver a more consistent user experience. For video conferencing, it uses OpenTalk rather than Jitsi, while its project management and wiki applications are proprietary developments created by govIT.

Because SovereignDesk is tailored specifically to the needs of public administration, some of the functionality available in the original open-source tools has been streamlined or removed. In return, the platform offers features such as multi-tenancy and the integration of artificial intelligence, extending even to specialized administrative applications and workflows.

Cloud-based deployment provides an attractive cost model with usage-based pricing and high scalability. In the future, municipalities and public authorities will also be able to procure SovereignDesk through cooperatives such as govdigital, simplifying procurement.

With its comprehensive operating model and integration of specialized administrative processes, SovereignDesk has evolved into a broader product suite. Future development plans include a sovereign operating system, certified hardware components, and offline functionality. 

One vendor, one platform, and everything from a single source—but without a best-of-breed approach. This succinctly describes Nextcloud’s vision of a sovereign digital workplace through Nextcloud Hub. Nextcloud Hub provides a comprehensive suite for sovereign workplaces, combining familiar solutions such as Nextcloud Files for file sharing and document management with Nextcloud Talk, Groupware, Office, Assistant, and Flow. The various components are tightly integrated, creating a cohesive user experience. However, unlike some competing solutions, Nextcloud Hub is not specifically tailored to the requirements of public administration. As a result, integrating specialized administrative applications and workflows can be more challenging. On the other hand, Nextcloud Hub offers significant advantages in terms of usability, ease of administration, and consistent compliance management.

OSC is particularly well suited to organizations with approximately 200 or more workplaces that are looking for a highly customizable open-source alternative to Microsoft. The concept offers maximum flexibility: organizations can deploy individual modules, such as video conferencing, or adopt OSC as a fully managed collaboration suite. Although OSC is not exclusively designed for public administration, its modular architecture makes it possible to integrate collaboration tools into existing specialized administrative systems and workflows. It also supports the continued use and integration of existing collaboration applications where required. A unified OSC interface is currently under development and is expected to be available by late summer 2026, making it easier and more convenient to use the various modules within a single environment.

European providers address these concerns by combining cloud technology with clearly defined sovereignty principles. Servers and storage systems are sourced and operated within Europe. One example is T Cloud Public from Deutsche Telekom, which provides infrastructure on which sovereign workplace solutions can run alongside European software approaches and open-source components. Together, infrastructure, platform, and application layers form a coherent foundation for a genuinely sovereign digital workplace.

The digital workplace has become much more than a collection of tools for everyday office work. For public administration, it is increasingly a strategic lever for achieving digital sovereignty. Initiatives such as SovereignDesk, openDesk, Nextcloud Hub, and Open Source Collaboration demonstrate that viable alternatives to US-based platforms already exist. Built on open-source software, European infrastructure, and transparent governance models, these solutions offer public organizations greater control over their digital environments. 

Combined with sovereign cloud services, they provide a future-proof foundation for administrative modernization that is powerful, compliant, and independent. Organizations seeking to make digital transformation sustainable should therefore view the digital workplace as an integral component of a broader sovereignty strategy.