Connectivity is not a feature checklist. The right stack emerges from where the device operates, how often it communicates, how much energy it has, and who will support the network.
Map the physical environment
Document distance, obstructions, mobility, installation access, interference, and whether a phone or gateway is acceptable. These constraints eliminate unsuitable options quickly.
Model traffic and energy
Payload size, transmission frequency, acknowledgement, retries, and radio wake time shape battery life and service cost. Test with realistic worst cases.
Separate transport from messaging
Radio choice and application messaging solve different problems. MQTT can provide clear topics, delivery levels, and session behaviour across several underlying networks.
Strong technology begins with the complete operating context. Connect the disciplines early, validate against real constraints, and design for the lifecycle—not merely the launch.