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What is new in Azure IoT Hub? (preview)

Important

Azure IoT Hub with ADR integration and Microsoft-backed X.509 certificate management is in public preview and isn't recommended for production workloads. For more information, see the FAQ: What is new in IoT Hub?.

Starting November 2025, Azure IoT Hub introduces two new preview features: integration with Azure Device Registry (ADR) and enhanced Microsoft-backed X.509 certificate management. These features are designed to improve security, simplify device management, and streamline operations for IoT deployments.

Manage your devices in a unified registry with Azure Device Registry

IoT Hub now integrates directly with Azure Device Registry (ADR) to bring a consistent experience across cloud and edge workloads. ADR is a centralized device registry that allows you to manage IoT devices across IoT Hub and IoT Operations instances using namespaces. You can link your IoT instances to either a new or an existing ADR namespace. Integration of IoT Hub with ADR is essential to leverage the latest enhancements in device provisioning, certificate management, and deeper integration with Azure Resource Manager.

For more information, see What is Azure Device Registry?.

Manage your X.509 credentials with certificate management

IoT Hub now introduces certificate management for managing device certificates using Microsoft-managed public key infrastructure (PKI) with X.509 certificates. Certificate management is an optional feature of ADR that enables you to issue and manage X.509 certificates for your IoT devices. It configures a dedicated, cloud-based PKI for each of your ADR namespaces, without requiring any on-premises servers, connectors, or hardware. It handles the certificate of issuance and renewal for all IoT devices that have been provisioned to that ADR namespace. These X.509 certificates can be used for your IoT devices to authenticate with IoT Hub.

These X.509 certificates are strictly operational certificates that the device uses to authenticate with IoT Hub for secure communications, after the device has onboarded with a different credential.

To use certificate management, devices must be provisioned through Device Provisioning Service (DPS).

For more information, see What is certificate management? and Key concepts for certificate management.

Supported regions

Integration of IoT Hub with Azure Device Registry and certificate management is in preview and currently supported in the following regions:

  • East US
  • East US 2
  • West US
  • West US 2
  • West Europe
  • North Europe

Next steps

To learn more about using Azure Device Registry and certificate management in IoT Hub, complete the following guide:

Get started with ADR and certificate management in IoT Hub

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