Telnyx eSIM profiles are provisioned over-the-air via GSMA SGP.02 M2M eSIM architecture, allowing remote switching between carrier profiles without physical SIM replacement for deployed devices. RESTful Mission Control API exposes SIM activation, deactivation, data usage alerts, and carrier preference settings, enabling fully automated SIM lifecycle management integrated into DevOps provisioning pipelines. Per-kilobyte billing with no monthly minimums aligns cost to actual data consumption for low-traffic IoT sensors where flat monthly fees create waste. Real-time usage webhooks trigger automated alerts and SIM pausing when devices exceed defined data thresholds, preventing unexpected bill shocks on compromised or malfunctioning devices. Coverage in 180+ countries via direct GSMA interconnects with tier-1 operators provides consistent performance across global supply chains.