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HORIZON-CL4-2026-04-DATA-03

Open Internet Stack Support for Scale

CSACluster 4€4,000,00015 Apr 2026
Topic CodeHORIZON-CL4-2026-04-DATA-03F&T Portal
Call IdentifierHORIZON-CL4-2026-04Call — DIGITAL (single stage)
InstrumentHORIZON-CSACoordination and Support Action
Budget ModelLump SumHORIZON-AG-LS
Funding Rate100%Annex G — CSA = 100%
Page Limit (Part B)28 pagesCSA + lump sum (Annex A)
Evaluation Thresholds3 / 3 / 3 · cum. 10Standard — no override
Expected Projects1~€4M (WP stated)
DestinationDeveloping an agile and secure single market and infrastructure for data-services and trustworthy AI servicesWP Part 7
Cluster / PillarCluster 4 / Pillar IIDigital, Industry and Space
China EligibilityEligible ✓Destination excludes RIA & IA only
Special ConditionsEU comms restrictionsHigh-risk mobile network suppliers excluded
Verify: Open this topic on the F&T Portal →  ·  Sources: General Annexes 2026-2027, WP Part 7
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China is ELIGIBLE for this topic. The destination excludes RIA and IA only — CSA is not restricted. However, EU communications network restrictions and MIIT university exclusions still apply.

Expected Outcomes

  1. The Open Internet Stack ecosystem is supported to achieve scale across Europe, through coordination, community building, and deployment support activities.

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