Is IoT Hub an Azure service that allows back-end developers to build remote device-management solutions?

IoT Hub is indeed an Azure service designed to facilitate remote device management, making it particularly valuable for back-end developers working with Internet of Things (IoT) applications. This service acts as a central message hub, enabling bi-directional communication between IoT devices and the cloud. It allows developers to manage devices, monitor their status, and push commands or updates to devices efficiently.

IoT Hub supports various features essential for remote device management, such as device registration, authentication, and configuration, providing developers with a robust toolset to create and maintain device fleets. Thus, it serves a critical function in the ecosystem of IoT by ensuring reliable communication and management capabilities.

The other options suggest limitations or contexts that do not accurately reflect the capabilities of IoT Hub. While it is focused on IoT devices, the assertion that it solely serves that function is misleading. The service is also built to integrate with various software solutions, not limited to mobile applications, thereby expanding its usability for different back-end architectures. Hence, selecting that IoT Hub is a service for building remote device-management solutions is a valid assertion, aligning well with its intended functionality.