#aws Kelvin suggested it might be helpful for the work I've been doing.  We're receiving data in JSON format from App Engine and writing directly to S3.  However [the docs say](https://docs.aws.amazon.com/appflow/latest/userguide/requirements.html#s3) "If you use Amazon S3 as a source, the data must be in CSV format."  If we have to convert to CSV, which may be complicated because we have layered JSON, then we may as well just manage the loading into [[Amazon Redshift]].