# IAzureResource.runAsExisting

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

Marks the resource as an existing resource when the application is running.

## Definition

```typescript
interface IAzureResource {
  // ... omitted for brevity
  runAsExisting(
      name: ParameterResource,
      resourceGroup?: ParameterResource): IAzureResource;
}
```

## Signature

```typescript
runAsExisting(
    name: ParameterResource,
    resourceGroup?: ParameterResource): IAzureResource
```

## Parameters

- `name` (`ParameterResource`)
- `resourceGroup` (`ParameterResource`) `optional`

## Returns

[IAzureResource](/reference/api/typescript/aspire.hosting.azure/iazureresource.md) `builder`

## Defined on

- [IAzureResource](/reference/api/typescript/aspire.hosting.azure/iazureresource.md) -- `interface`