# DynamoDBGrainStorageSiloBuilderExtensions.AddDynamoDBGrainStorageAsDefault(ISiloBuilder, Action<OptionsBuilder<DynamoDBStorageOptions>>)

[Type overview](/orleans/docs/api/csharp/microsoft.orleans.persistence.dynamodb/orleans.hosting.dynamodbgrainstoragesilobuilderextensions/) | [Methods](/orleans/docs/api/csharp/microsoft.orleans.persistence.dynamodb/orleans.hosting.dynamodbgrainstoragesilobuilderextensions/methods/)

[Source](https://github.com/dotnet/orleans/blob/e4e752cedecc2976811db49802c7a999b1f1c704/src/AWS/Orleans.Persistence.DynamoDB/Hosting/DynamoDBGrainStorageSiloBuilderExtensions.cs)

```csharp
public static ISiloBuilder AddDynamoDBGrainStorageAsDefault(this ISiloBuilder builder, Action<OptionsBuilder<DynamoDBStorageOptions>> configureOptions = null)
```

Configure silo to use AWS DynamoDB storage as the default grain storage.

### Parameters

- `builder` (`ISiloBuilder`)
- `configureOptions` (`Action<OptionsBuilder<DynamoDBStorageOptions>>`)