The serviceAccountId property within the AwsAccessRole and AzureProperties schemas has been changed to readOnly. This means any existing code attempting to set or modify these fields will now fail. Developers must update their connection creation/update logic to no longer provide a value for serviceAccountId, as it is now an output-only field representing the connection's identity. This is a breaking change. Alongside this, new serviceDirectoryService fields have been introduced in both AwsProperties and AzureProperties. These optional fields allow you to specify a Service Directory resource name, enabling private network routing for your BigQuery connections to AWS and Azure via Cross-Cloud Interconnect. This enhances security and performance for external data sources.
Breaking Change
Docs