Bull and Schwarz Digits Partner to Build Sovereign European AI Computing Infrastructure

Bull and Schwarz Digits Forge Strategic Partnership

French supercomputer manufacturer Bull and Schwarz Digits, the technology arm of Lidl-owner Schwarz Group, signed a memorandum of understanding to jointly develop AI computing services that would operate entirely under European jurisdiction1

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. The announcement came at Germany's 2026 Digital Summit in Berlin, positioning the collaboration as a major step toward building sovereign European AI infrastructure. Under the agreement, Schwarz Digits will offer the service through its STACKIT cloud platform, which rents out computing power and data storage over the internet, while Bull handles manufacturing at its factory in Angers, France1

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Building a Complete European AI and Cloud Stack

The Schwarz Digits partnership with Bull aims to create a comprehensive European AI and cloud stack running from servers to software. The collaboration targets regulated and strategic sectors in particular, ensuring sensitive data, infrastructure, and operations remain under European jurisdiction and control2

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. Bernie Wagner, chief revenue officer of Schwarz Digits, emphasized the significance: "Together, we demonstrate that Europe can deliver high-performance innovation entirely on its own terms." The two companies plan to co-design servers filling data centers together, adhering to Open Compute Project standards, and could eventually offer business software from SAP through the partnership1

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. Financial terms of the deal were not disclosed.

Technical Capabilities and Manufacturing Strength

Bull brings substantial expertise in high-performance computing and supercomputer manufacturing to the partnership. The state-owned French company recently doubled production capacity at Europe's only plant dedicated to building supercomputers1

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. Bull's systems took the top three places in the Green500 ranking of energy-efficient supercomputers in June, showcasing its direct liquid cooling technology2

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. The company also built the JUPITER supercomputer in Germany, which Bull describes as Europe's most powerful. Companies and public bodies using STACKIT will be able to access Bull's BullSequana AI platform and software for building and running AI applications directly on the service1

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. Bull reports approximately €720 million in revenue and employs 3,000 staff across 32 countries.

Schwarz Group's Expanding AI Ambitions

Schwarz Digits, whose parent company owns the Lidl and Kaufland supermarket chains, has been making significant moves in the AI space beyond this partnership. The company is leading a C$7 billion ($5 billion) funding round for Canadian AI lab Cohere, which is expanding in Europe through acquisitions of German AI startup Aleph Alpha and Czech-based cybersecurity firm Aisle1

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. This aggressive expansion strategy demonstrates Schwarz's commitment to building European AI capabilities. The STACKIT cloud platform will serve as the foundation for delivering AI computing services to European organizations seeking to develop and scale AI and enterprise computing while maintaining data sovereignty.

Future Plans and Strategic Implications

Beyond the initial collaboration, Bull and Schwarz Digits plan to explore SAP RISE integration and large high-performance computing projects. The companies are also investigating quantum computing integration, signaling long-term ambitions in emerging technologies2

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. Emmanuel Le Roux, chief executive of Bull, stated: "This partnership, which contributes to building a sovereign digital infrastructure in Europe, reflects our commitment to a resilient and competitive European ecosystem." The announcement came just one day after Chancellor Friedrich Merz emphasized that Germany and Europe must accelerate development of their own AI capabilities. This timing underscores growing political and economic pressure to establish technological independence from non-European providers, particularly as concerns about data sovereignty and strategic autonomy intensify across the continent.