Your question is Explain ETL in Data Engineering. Take a moment with it on the right.
Talk me through your thinking if you like. When you're confident, submit your answer and I'll grade it like a real screen (7/10 or better passes).
You're joining a team that is building and maintaining internal data pipelines. Before discussing implementation details, the interviewer wants to check that you understand the basic ETL pattern and why teams use it.
Explain the ETL process and its importance in data engineering.