Azure IoT Services Documentation

Azure IoT Hub

Azure IoT Hub is a fully managed service that enables reliable, bi-directional connectivity between millions of Internet of Things (IoT) devices and the cloud. It acts as a central message hub for IoT solutions, providing device-to-cloud and cloud-to-device communication, device management, and security.

Key Features

• Device Identity Management: Securely provision, manage, and monitor individual devices.
• Bi-directional Communication: Supports device-to-cloud telemetry and cloud-to-device commands.
• Scalability: Handles millions of devices with high throughput.
• Integration: Seamlessly integrates with other Azure services like Azure Stream Analytics, Azure Functions, and Azure Logic Apps.
• Security: Offers multiple authentication mechanisms (SAS tokens, X.509 certificates) and transport security (TLS).

Use Cases

• Remote monitoring of industrial equipment.
• Smart home device management.
• Connected vehicle data collection.
• Inventory tracking and asset management.

Core Concepts

• Device Identity: Each device connected to IoT Hub has a unique identity registered in the IoT Hub's identity registry.
• Device Twin: A JSON document that represents the state of a device, including desired properties set by the cloud and reported properties updated by the device.
• Message Routing: Configure rules to route device telemetry messages to various endpoints based on message content.
• Jobs: Schedule and execute operations on a group of devices, such as firmware updates or reboots.

Getting Started

To begin using Azure IoT Hub, you'll need to:

1. Create an IoT Hub instance in the Azure portal.
2. Register devices within your IoT Hub.
3. Install and configure the Azure IoT SDK on your device to establish a connection.

API Reference Snippet (Device-to-Cloud Message)

// Assuming 'deviceClient' is an initialized IoT Hub device client

const message = {
    deviceId: "myDevice",
    temperature: 25.5,
    humidity: 60.2
};

deviceClient.sendEvent(message, function (err) {
    if (err) {
        console.error('Error sending message: ' + err.toString());
    } else {
        console.log('Message sent successfully.');
    }
});
                    

For detailed API documentation, SDKs, and tutorials, please refer to the relevant sections in the sidebar.