This what backstage does. https://github.com/backstage/backstage/blob/999936b3915d807206f833f44c8397775780a22e/packages/backend-common/src/reading/AwsS3UrlReader.ts#L50 ``` export const DEFAULT_REGION = 'us-east-1'; ``` Shall we consider this? With this approach, the `region` is not a breaking change any more.