Azure IoT Documentation

Use X.509 certificates for each device to ensure unique, tamper‑proof identities.

{
    "provisioning": {
        "type": "X509",
        "certificate": "-----BEGIN CERTIFICATE-----\n..."
    }
}

Leverage Azure Device Provisioning Service (DPS) for zero‑touch enrollment.

• Implement exponential back‑off with jitter for retry logic.
• Use MQTT over TLS for lightweight, bi‑directional communication.
• Configure keep‑alive intervals to detect network interruptions early.

clientOptions = {
    keepalive: 60,
    reconnectPeriod: 1000,
    connectTimeout: 30 * 1000
};

Enable Azure IoT Hub security policies: read‑only keys, per‑device keys, and role‑based access control.

Encrypt data at rest using Azure Storage Service Encryption and enforce Azure Defender for IoT.

Batch telemetry messages (max 256KB) before sending to reduce overhead.

Use Azure IoT Edge for local processing and reduce cloud bandwidth.

Leverage built‑in autoscale on IoT Hub units based on message ingress.

Integrate with Azure Monitor and Log Analytics to capture device events.

Enable Device Twins for real‑time property sync and health checks.

{
    "$desired": {
        "firmwareVersion": "1.2.0"
    }
}

Use IoT Hub tier planning: S1 for low volume, S2 or S3 for high throughput.

Apply Azure Advisor recommendations to optimize message routing.

Compress payloads with gzip before sending.