Create an IoT hub using the Azure portal

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This article describes how to create and manage an IoT hub, using the Azure portal.

Create an IoT hub

This section describes how to create an IoT hub using the Azure portal.

  1. Sign in to the Azure portal.

  2. On the Azure homepage, select the + Create a resource button.

  3. From the Categories menu, select Internet of Things, and then select IoT Hub.

  4. On the Basics tab, complete the fields as follows:

    Important

    Because the IoT hub will be publicly discoverable as a DNS endpoint, be sure to avoid entering any sensitive or personally identifiable information when you name it.

    Property Value
    Subscription Select the subscription to use for your hub.
    Resource group Select a resource group or create a new one. To create a new one, select Create new and fill in the name you want to use.
    IoT hub name Enter a name for your hub. This name must be globally unique, with a length between 3 and 50 alphanumeric characters. The name can also include the dash ('-') character.
    Region Select the region, closest to you, where you want your hub to be located. Some features, such as IoT Hub device streams, are only available in specific regions. For these limited features, you must select one of the supported regions.
    Tier Select the tier that you want to use for your hub. Tier selection depends on how many features you want and how many messages you send through your solution per day.

    The free tier is intended for testing and evaluation. The free tier allows 500 devices to be connected to the hub and up to 8,000 messages per day. Each Azure subscription can create one IoT hub in the free tier.

    To compare the features available to each tier, select Compare tiers. For more information, see Choose the right IoT Hub tier for your solution.
    Daily message limit Select the maximum daily quota of messages for your hub. The available options depend on the tier you've selected for your hub. To see the available messaging and pricing options, select See all options and select the option that best matches the needs of your hub. For more information, see IoT Hub quotas and throttling.

    Screen capture that shows how to create an IoT hub in the Azure portal.

  5. Select Next: Networking to continue creating your hub.

  6. On the Networking tab, complete the fields as follows:

    Property Value
    Connectivity configuration Choose the endpoints that devices can use to connect to your IoT hub. Accept the default setting, Public endpoint, for this example. You can change this setting after the IoT hub is created. For more information, see Managing public network access for your IoT hub.

    Screen capture that shows how to choose the endpoints that can connect to a new IoT hub.

  7. Select Next: Management to continue creating your hub.

    Screen capture that shows how to set the role-based access control and scale for a new IoT hub.

    Accept the default settings here. If desired, you can modify any of the following fields:

    • Pricing and scale tier: Tier selection depends on how many features you want and how many messages you send through your solution per day. The free tier is intended for testing and evaluation. The free tier allows 500 devices to be connected to the hub and up to 8,000 messages per day. Each Azure subscription can create one IoT hub in the free tier. For details about other tier options, see Choosing the right IoT Hub tier.

      If you're working through a quickstart, select the free tier.

    • IoT Hub units: The number of messages allowed per unit per day depends on your hub's pricing tier. For example, if you want the hub to support ingress of 700,000 messages, choose two S1 tier units.

    • Role-based access control: This property decides how you manage access to your IoT hub. Allow shared access policies or choose only role-based access control. For more information, see Control access to IoT Hub by using Azure Active Directory.

    • Device-to-cloud partitions: This property relates the device-to-cloud messages to the number of simultaneous readers of the messages. Most hubs need only four partitions.

    Note

    Prices shown are for example purposes only.

  8. Select Next: Tags to continue to the next screen.

    Tags are name/value pairs. You can assign the same tag to multiple resources and resource groups to categorize resources and consolidate billing. In this document, you won't be adding any tags. For more information, see Use tags to organize your Azure resources.

    Screen capture that shows how to assign tags for a new IoT hub.

  9. Select Next: Review + create to review your choices.

  10. Select Create to start the deployment of your new hub. Your deployment will be in progress a few minutes while the hub is being created. Once the deployment is complete, select Go to resource to open the new hub.

Update the IoT hub

You can change the settings of an existing IoT hub after it's created from the IoT Hub pane. Here are some properties you can set for an IoT hub:

Pricing and scale: Migrate to a different tier or set the number of IoT Hub units.

IP Filter: Specify a range of IP addresses for the IoT hub to accept or reject.

Properties: A list of properties that you can copy and use elsewhere, such as the resource ID, resource group, location, and so on.

For a complete list of options to update an IoT hub, see the az iot hub update commands reference page.

Shared access policies

You can also view or modify the list of shared access policies by choosing Shared access policies in the Security settings section. These policies define the permissions for devices and services to connect to IoT Hub.

Select Add shared access policy to open the Add shared access policy page. You can enter the new policy name and the permissions that you want to associate with this policy, as shown in the following screenshot:

Screen capture showing how to add a shared access policy.

  • The Registry Read and Registry Write policies grant read and write access rights to the identity registry. These permissions are used by back-end cloud services to manage device identities. Choosing the write option automatically includes the read option.

  • The Service Connect policy grants permission to access service endpoints. This permission is used by back-end cloud services to send and receive messages from devices. It's also used to update and read device twin and module twin data.

  • The Device Connect policy grants permissions for sending and receiving messages using the IoT Hub device-side endpoints. This permission is used by devices to send and receive messages from an IoT hub or update and read device twin and module twin data. It's also used for file uploads.

Select Add to add your newly created policy to the existing list.

For more detailed information about the access granted by specific permissions, see IoT Hub permissions.

Delete an IoT hub

To delete an IoT hub, open your IoT hub in the Azure portal, then choose Delete.

Screenshot showing where to find the delete button for an IoT hub in the Azure portal.

Next steps

Learn more about managing Azure IoT Hub: