P4mCast: Accelerating and Scaling Fault-Tolerant Atomic Multicast in Multi-Cloud Environment - Boughzala, Bochra; Koldehofe, Boris; Lazovik, Alexander (2025 IEEE 45th International Conference on Distributed Computing Systems Workshops (ICDCSW), Distributed Computing Systems Workshops (ICDCSW), 2025 IEEE 45th International Conference on, ICDCSW, 2025)