XML. Not CSV, not Parquet (whatever that is), not protobufs. Export the data as XML, with a schema. Not json or yaml either. You can render the XML into whateve

XML. Not CSV, not Parquet (whatever that is), not protobufs. Export the data as XML, with a schema. Not json or yaml either. You can render the XML into whatever format you want downstream. The alternative path involves parsing csv in order to turn it into a different csv, turning json into yaml and so forth. Parsing "human readable" formats is terrible relative to parsing XML. Go with the unambiguous source format and turn it into whatever is needed in various locations as required.