At this point in the process, the data from the devices is sitting in Azure IoT Hub waiting for the next step of the journey. In this case, “sitting” means that the data has just arrived in Azure IoT Hub and is waiting to be picked up by another service for processing. Chapter 3 walked through the process of creating and configuring an Azure IoT Hub to receive the messages sent from the devices. And, depending on how the IoT Hub was configured, the data currently sitting in IoT Hub could have a very short lifespan.
The configuration of the IoT Hub in Chapter 3 chose the free tier, ...
