Getting the raw data into BigQuery or another tool is an ETL problem in itself. You have unstructured log files, you have external APIs such as SalesForce, you

Getting the raw data into BigQuery or another tool is an ETL problem in itself. You have unstructured log files, you have external APIs such as SalesForce, you have various relational databases, etc etc. Someone has to come in and transform this data into a unified format that can be inserted into BigQuery.