Microsoft Certified: Azure Fundamentals (AZ-900) 2026 – 400 Free Practice Questions to Pass the Exam

The primary function of IoT Hub is to provide bi-directional connections between IoT devices and applications. This service enables secure and reliable communication, allowing devices to send telemetry data to the cloud and receive commands or updates from cloud-hosted applications. This bi-directional capability is essential for creating interactive and responsive applications that utilize data from IoT devices.

IoT Hub also supports features such as device-to-cloud and cloud-to-device messaging, which is crucial for scenarios where real-time communication is necessary. This facilitates a variety of use cases, including monitoring, control, and data analytics, which are foundational aspects of building effective IoT solutions.

While other options mention various IoT-related functionalities, they do not capture the core purpose of IoT Hub as accurately as the function of establishing and managing bi-directional communications between IoT devices and applications.