Web 4.0 architectural framework and Open Internet Stack applications for virtual worlds (RIA)

Expected Outcome:Common expected outcomeStimulate the emergence at European and global scale of Web 4.0 (such as standards, protocols, components and a framework for their interaction) and virtual worlds solutions.Expected outcome for the “Architectural Framework” areaAn emerging Web 4.0 architectural framework made of cross-platforms, interoperable, trustable, safe and secure building blocks that rely on Open Source softwareA structured and agile eco-system of talented contributors driving the creation and evolution of commons based on Open Source software, open standards and open hardware and designs. Expected outcome for the “Applications” areaOpen source and made in Europe, supporting trust and sovereignty, and delivering credible alternative choices for citizens, governments and companies including start-ups and SMEs.Interoperable, standards-based, decentralised solutions exploiting extended reality technologies.Compliant-by-design with EU rules and regulations. Paced for easy deployment by the rich European eco-systems of providers, integrators and verticals. For both areas the outcome will bring synergies with actions under Virtual worlds, Open Internet Stack, 3C, as well as with other like-minded actions in Europe e.g. at Member States level and outsideScope:Proposals should address one of the following areas and should clearly identify the area addressed.1/ “Architectural Framework” areaDevelop a human-centric Web 4.0 architectural framework encompassing interoperable layers from open hardware, web, AI agents, up to immersive and decentralised applications, utilizing cross-platform digital commons developed by European innovators (SMEs, start-ups, academia). Proposals should demonstrate immersive multi-modal user interaction and should enhance trust, privacy, portability, and advanced identity management, facilitating deployment of the EU Wallet while optimizing the balance between decentralization, security, and energy efficiency with verifiable metrics.2/