IoT devices are no longer confined to a single network, country, continent. Fleets of vehicles, industrial sensors, payment terminals, health devices, and asset trackers now cross borders, roam between operators, and increasingly talk to satellites as naturally as they talk to terrestrial networks. Behind this apparent simplicity sits a messy reality of roaming agreements, GRX/IPX interconnects, GTP tunnels across half the planet, policy engines trying to enforce SLAs on netw