# AzureVirtualNetworkResource.addSubnet

- Module: [Aspire.Hosting.Azure.Network](/reference/api/typescript/aspire.hosting.azure.network.md)
- Defined on: [AzureVirtualNetworkResource](/reference/api/typescript/aspire.hosting.azure.network/azurevirtualnetworkresource.md)
- Version: `13.4.0`
- Kind: `method`

Adds an Azure subnet resource to an Azure Virtual Network resource.

## Definition

```typescript
interface AzureVirtualNetworkResource {
  // ... omitted for brevity
  addSubnet(
      name: string,
      addressPrefix: ParameterResource,
      subnetName?: string): AzureSubnetResource;
}
```

## Signature

```typescript
addSubnet(
    name: string,
    addressPrefix: ParameterResource,
    subnetName?: string): AzureSubnetResource
```

## Parameters

- `name` (`string`)
- `addressPrefix` (`ParameterResource`)
- `subnetName` (`string`) `optional`

## Returns

[AzureSubnetResource](/reference/api/typescript/aspire.hosting.azure.network/azuresubnetresource.md) `builder`

## Defined on

- [AzureVirtualNetworkResource](/reference/api/typescript/aspire.hosting.azure.network/azurevirtualnetworkresource.md) -- `handle`