LDT CitiVERSE EDIC will develop a unified digital twin infrastructure to connect Local Digital Twins (LDTs) across Europe, ensuring seamless interoperability through standardized specifications. This federation of platforms enables cities and regions to share data and resources, advancing a secure, interconnected digital ecosystem that strengthens the supply chain by eliminating siloed solutions and promoting shared innovation, leveraging previous DEP projects (e.g., Smart Communities, Data Space, EU LDT toolbox).