Most developers already understand monitoring.
CPU usage.
Memory.
Request latency.
Error rates.
But IoT gives you another layer.
Your backend can be perfectly healthy while thousands of devices are silently offline.
That's a problem.
You might want metrics like:
Devices online: 94%
Messages received: 1.2M/hour
Invalid readings: 0.4%
Disconnected devices: 620
Average message delay: 240ms
Now you can actually understand what's happening.
I think this is an important mindset shift.
For normal software:
Is the application working?
For IoT:
Is the application working AND are the physical devices actually communicating correctly?
Both matter.
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