LDT4SSC aims to create a robust, interconnected ecosystem of Local Digital Twins (LDTs) that scales across sectors, regions, and borders, driving the adoption of LDT services and the development of advanced AI-driven services. By leveraging prior achievements like the EU LDT Toolbox and the European data space for smart communities (DS4SSCC-DEP), and integrating with ongoing efforts such as CitiVerse and the LDT CitiVERSE EDIC, the project will create tangible resources to enable European communities to address shared challenges using LDT technology  — e.g.: climate change, air quality, waste or water management, or energy efficiency.
A key goal is to connect (existing) LDTs into a European “federation” through a common interoperability blueprint, consolidating work from DSSC, DS4SSCC, GAIA-X, and SIMPL. This blueprint will facilitate seamless data exchange and integration, enabling communities to share resources, optimise decision-making, and create scalable, open-source solutions. Launching a community of stakeholders, the project will engage representatives from government, industry, academia, and civil society to inform activities and ensure outputs meet diverse needs.
The project will facilitate and fund the practical implementation of these solutions through 15-20 pilots of multi-stakeholder consortia working on use cases addressing critical domains (e.g.: resource management). These pilots will also seed a marketplace of AI-driven services tailored to community challenges. By enabling the replication and scalability of services across regions, the project will stimulate a dynamic LDT market, fostering collaboration and aligning with the EU's Digital Decade policies. Through these activities, the project seeks to establish a unified digital landscape in Europe, supporting ethical AI, open standards, and fair competition, while promoting sustainable, scalable solutions for smart communities.