What the cold path is, why raw data preservation matters, and how Azure Storage Account fits into an IoT Hub message routing setup for long-term storage.
How Cloud-to-Device messaging works in Azure IoT Hub: what C2D messages are, what they can and can’t do, and when to use them.
How IoT Hub message routing works: custom endpoints, routing queries, the fallback route, and how to filter messages based on application properties, system properties, and message body.
Azure IoT Hub explained: what it is, what it actually does, and why it sits at the center of every Azure IoT solution.