I don't do security, but I have been a data engineer for the better part of a decade and I don't understand what void and unstructured are. Am I the fool? I don't get it.
The primitives of many of these ETL systems are structured tables (snowflake, parquet, pandas dataframes, whatever) and I don't think I'd ever choose bytes over structured tables. The unstructured parts of data systems I've worked on have always chewed up an outsize portion of labor with difficult to diagnose failure modes. The biggest cognitive effort win of reverse ETL solutions has been to make external systems and applications "speak table".
The primitives of many of these ETL systems are structured tables (snowflake, parquet, pandas dataframes, whatever) and I don't think I'd ever choose bytes over structured tables. The unstructured parts of data systems I've worked on have always chewed up an outsize portion of labor with difficult to diagnose failure modes. The biggest cognitive effort win of reverse ETL solutions has been to make external systems and applications "speak table".