Cloud-dependent digital twin architectures embed a single point of failure via persistent connectivity dependency, as evidenced by the July 2024 CrowdStrike outage that cost Delta Airlines 500 million. This Technical Bulletin prescribes a three-step architectural transition — State Synchronisation Audits, hybrid Orphan-Mode capabilities enabling autonomous twin operation during connectivity loss, and Sovereign AI Governance — to satisfy converging DORA, NIS2, EASA Part-IS, and EU AI Act obligations. Northrop Grumman's B-21 digital ecosystem and Joby Aviation's NVIDIA IGX Thor integration are cited as sovereign architecture exemplars.
David Yeoman (Sun,) studied this question.