Network Digital Twin for 6G and Beyond: An End-to-End View Across Multi-Domain Network Ecosystems. - Dinh-Hieu Tran; Nazar Waheed; Yuris Mulya Saputra; Xingqin Lin; Cong Thanh Nguyen 001; Tedros Salih Abdu; Van Nhan Vo 001; Van-Quan Pham; Madyan Alsenwi; Abuzar Babikir Mohammad Adam; Symeon Chatzinotas; Eva Lagaunas; et al. (CoRR, 2025)