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Manage IoT and OT Devices with the Cloud Device Inventory

4 September 2026Doc update+25 / −27 lines

In brief

The article was refreshed with clearer wording, updated terminology and capitalization, improved formatting of UI labels, and revised instructions for filtering, exporting, and identifying devices that have not recently communicated.

What Defender admins need to know

No administrator action is required. The revised guidance makes existing device inventory procedures easier to follow.

Summaries are generated from the documentation change itself.

Documentation change

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The comparison below shows only the changed extract. Use the full-page view for complete context.

Manage IoT and OT devices with the device inventory

TheYou can use the device inventory can be used to view device systems,systems and network information. The search, filter, editYou can use the Search, Filter, Edit columns, and exportExport tools can be used to manage device system and network information.

:::image type="content" source="media/how-to-manage-device-inventory-on-the-cloud/device-inventory-screenshot.png" alt-text="A total overview of Defender for IoT's device inventory screen.":::

Some of the benefits of the device inventory include:

  • Identify all IOT,IoT and OT devices from different inputs. For example, allowingthis allows you to understand which devices in your environment aren't communicating,communicating and will require troubleshooting.

  • Group, and filter devices by site, type, or vendor.

  • Gain visibility into each device,device and investigate the different threats,threats and alerts for each one.

  • Export the entire device inventory to a CSV file for your reports.

Device inventory overview

The Device inventory gives you an overview of all devices within your environment. Here you can see the individual details of each device and filter,filter and order your search by various options.

The following table describes the different device properties in the device inventory.

| Site | The site that contains this device. | - | | Vendor | The name of the device's vendor, as defined in the MAC address. | - |

To view the device inventory:inventory:

  1. Open the Azure portal.

In the device inventory table, you can add or remove columns. You can also change the column order by dragging and dropping a field.

To customize the device inventory table:table:

  1. Select the :::image type="icon" source="media/how-to-manage-device-inventory-on-the-cloud/edit-columns-icon.png" border="false"::: button.

  2. In the Edit columns tab, select the drop-down menu to change the value of a column.

    :::image type="content" source="media/how-to-manage-device-inventory-on-the-cloud/device-drop-down-menu.png" alt-text="Select the drop-down menu to change the value of a given column.":::

  3. Select Save to save any changes made.

If you want to reset the device inventory to the default settings, in the Edit columns window, select the :::image type="icon" source="media/how-to-manage-device-inventory-on-the-cloud/reset-icon.png" border="false"::: button.button in the Edit columns tab.

Filter the device inventory

You can search,search and filter the device inventory to define what information the table displays.

For a list of filters that you can be appliedapply to the device inventory table, see the Device inventory overview.

To filter the device inventory:inventory:

  1. Select Add filter.

    :::image type="content" source="media/how-to-manage-device-inventory-on-the-cloud/add-filter.png" alt-text="Select the add filter button to specify what you want to appear in the device inventory.":::

  2. In the Add filter window, select the column drop-down menu to choose which column to filter.

    :::image type="content" source="media/how-to-manage-device-inventory-on-the-cloud/add-filter-window.png" alt-text="Select which column you want to filter in the device inventory.":::

  3. Enter a value in the filter field to filter by.

  4. Select the Apply button. button.

MultipleYou can apply filters can be applied at one time. The filters aren't saved when you leave the Device inventory page.

View device information

Export the device inventory to CSV

You can export your device inventory to a CSV file. Any filters that you apply to the device inventory table will be exported,are exported when you export the table.

Select the :::image type="icon" source="media/how-to-manage-device-inventory-on-the-cloud/export-button.png" border="false"::: button to export your currentthe device inventory to a CSV file.inventory.

How to identify devices that have nothaven't recently communicated with the Azure cloud

If you are under the impressionsuspect that certain devices are notaren't actively communicating, there's a way to check,check and see which devices have nothaven't communicated in a specified time period.

To identify all devices that have nothaven't communicated recently:recently:

  1. Open the Azure portal.

    :::image type="content" source="media/how-to-manage-device-inventory-on-the-cloud/last-activity-filter.png" alt-text="Screenshot of the add filter screen where you can select the time period to see the last activity.":::

  2. Enter a time period,period or a custom date range,range and select Apply.

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