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--- title: 'Add scale units for host scaling: Azure portal' titleSuffix: Azure Bastion description: Learn how to add more instances (scale units) to Azure Bastion. author: abell ms.service: azure-bastion ms.topic: how-to ms.date: 03/31/2025 ms.author: abell # Customer intent: As someone with a networking background, I want to configure host scaling using the Azure portal. --- # Configure host scaling using the Azure portal This article helps you add more scale units (instances) to Azure Bastion to accommodate additional concurrent client connections. The steps in this article use the Azure portal. For more information about host scaling, see [Configuration settings](configuration-settings.md#instance). You can also configure host scaling using [PowerShell](configure-host-scaling-powershell.md). ## Configuration steps 1. Sign in to the [Azure portal](https://portal.azure.com). 1. In the Azure portal, go to your Bastion host. 1. Host scaling instance count requires Standard SKU tier or higher. On the **Configuration** page, for **Tier**, verify the tier is Standard or higher. If the SKU tier is Basic, select a higher SKU. To configure scaling, adjust the instance count. Each instance is a scale unit. 1. Select **Apply** to apply changes. >[!NOTE] > Any changes to the host scale units will disrupt active bastion connections. > ## Next steps For more information about configuration settings, see [Azure Bastion configuration settings](configuration-settings.md).