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Freedom251 › Blog › Bundeswehr

Is Germany’s Military Replacing Microsoft? What the Evidence Actually Shows in 2026

By Freedom251 Team · · 4 min read

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Not on the evidence currently available. Germany’s Bundeswehr has not been shown to have completed a broad replacement of Microsoft software. Official announcements describe a multi-cloud architecture, including an open-source-based cloud and a planned air-gapped Google environment; a separate federal-government report lists openDesk licenses without identifying a Bundeswehr rollout; and the military’s 2026 SAP migration concerns logistics and administration rather than Microsoft Office.

What the Bundeswehr is actually changing

The clearest military announcement is BWI’s multi-cloud plan, published on 5 June 2025. BWI, the Bundeswehr’s information-technology provider, said the architecture would combine three environments:

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  • the Bundeswehr private cloud;
  • Google Cloud Air-Gapped; and
  • a cloud solution based on open-source software.

The stated goal is to avoid dependence on one cloud provider, improve interoperability and match each workload to an appropriate security and data environment. That is a hosting and infrastructure strategy, not a declaration that Microsoft desktop applications have been removed. BWI and Bundeswehr announcement

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The planned air-gapped Google environment

The announced Google stack is intended to be physically isolated and operated by BWI in its own data centers. Software updates were to be delivered on physical media rather than through an external network. The announcement said integration would begin in 2026, with completion targeted for the end of 2027 alongside SAP Business Technology Platform availability. Those are announced milestones; they do not establish that the system is already complete.

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What openDesk numbers do—and do not—prove

A 27 April 2026 Bundestag report said the federal administration had 8,756 openDesk licenses, of which 8,475 were in production. openDesk is an open-source workplace and collaboration platform, but the figures cover federal administration as a whole, not the Bundeswehr alone. The same report said openDesk was not being used exclusively to replace proprietary products and that the government could not reliably state how many Microsoft workstations had been replaced. German Bundestag report on openDesk

Consequently, those license totals cannot answer whether the military has switched its Office seats, when such a switch might occur, or how large it would be. A Bundeswehr-specific openDesk deployment scope and timetable are not established by the cited official material.

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The SAP migration is a different software story

In May 2026, the Bundeswehr completed the move of its central SASPF system landscape to SAP S/4HANA. SASPF supports administrative and logistics work such as spare-parts ordering, payroll and personnel processes. The Bundeswehr said about 90,000 of roughly 266,000 personnel use SAP software daily. This is a major business-system modernization, but the source identifies SAP as the platform and does not describe it as a Microsoft replacement. Bundeswehr account of the S/4HANA migration

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Does a sovereign cloud mean Microsoft is gone?

No. A service can be operated in German facilities or by a national provider while still using Microsoft technology. In a Bundestag account, Delos Cloud was presented as a possible way to provide Microsoft services through Azure technology under a national operator. Sovereignty, information-security and classified-information questions were still under review in that report. Hosting Microsoft technology locally is therefore not equivalent to replacing Microsoft software. Bundestag report on Delos Cloud

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The federal government also said its Bundesclient does not rely on Microsoft Azure cloud services and set a goal of providing Bundesclient for 240,000 federal-administration workstations by 2032. That is a federal workplace target, not evidence of an equivalent completed Bundeswehr transition. Bundestag software-license report

How to evaluate any “Microsoft replacement” claim

The phrase is too broad unless the system layer is specified. A credible claim should identify:

Question Why it matters
Which layer changed? Office applications, collaboration, cloud hosting, business software, operating systems, communications and weapons-system software have different suppliers and migration paths.
What data classification applies? Military and classified workloads may require isolation, special accreditation and independently controlled infrastructure.
Can it operate disconnected? Air-gapped or intermittently connected systems need local update, backup and support procedures.
Who controls updates and maintenance? A national operator can reduce jurisdictional or provider dependence, but may still depend on proprietary code or external support.
Does interoperability survive? Open interfaces and standards determine whether new systems can exchange data with existing military platforms.
What is the lifecycle burden? Migration, training, patching and decades-long support can outweigh the apparent licensing change.

These questions align with the Bundeswehr’s emphasis on open architecture and with analysis of software supply-chain risk in military systems. Bundeswehr on software-defined defence and SWP analysis of military software supply-chain risk

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Why the Bundeswehr is pursuing more control over software

Lieutenant General Michael Vetter, head of Innovation and Cyber at the Federal Ministry of Defence, said: “Dafür brauchen wir eine offene Architektur, die wir nur gemeinsam mit der Industrie entwickeln können. Proprietäre Lösungen dürfen der Vergangenheit angehören.” The accompanying Bundeswehr article explains that military platforms can remain in service for decades while software changes over years, months or weeks. The point is an emphasis on adaptable, open architecture—not proof that Microsoft office products have been abandoned.

Numbers that are easy to misread

Figure Scope and qualification
8,756 openDesk licenses Federal administration, April 2026; not a Bundeswehr-only count.
8,475 licenses in production Federal administration, April 2026; not a count of replaced Microsoft workstations.
About 90,000 of roughly 266,000 personnel using SAP daily Bundeswehr statement about SAP usage after the S/4HANA transition.
€94 million in software-license spending Federal Ministry of Defence spending reported for fiscal year 2025; not Microsoft-only spending.
240,000 workstations targeted for Bundesclient by 2032 Federal-administration goal, not a completed Bundeswehr program.

Bottom line

Germany’s military is diversifying cloud infrastructure and moving important administrative systems to newer platforms, with greater attention to open architecture, isolation and provider independence. But no reviewed official source establishes a blanket, completed Bundeswehr replacement of Microsoft software. The openDesk figures belong to the federal administration, the SAP change is a business-system migration, and a sovereign or nationally operated cloud can still deliver Microsoft technology.

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BundeswehrGermanyMicrosoftmilitary technologyopenDeskSAP S/4HANAsovereign cloud

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