What's the difference between local, regional, and global eSIM plans?

Local plans cover one country (best per-GB value, e.g., Airalo Thailand 5GB/$11). Regional plans span multiple nearby countries (e.g., Nomad Europe 10GB/$29 for 35 countries). Global plans work across all covered destinations (e.g., Airalo Global 1GB/$9 in 138 countries). Choose based on itinerary: local for single-country trips, regional for contained travel areas, global for multi-continent itineraries.