The architecture, testing and observability patterns that keep large device fleets healthy.
Connecting devices is easy. Keeping thousands of them healthy in the field is the hard part — and it's where most IoT projects quietly fail.
Reliability comes from boring decisions: idempotent messaging, backpressure everywhere, over-the-air updates you can roll back, and observability down to a single device.
Test the unhappy paths first. Networks drop, clocks drift and firmware lies — your system should expect all three.
