Welcome to your interview.
The question is on your right: Explain ETL in Data Engineering. Take a moment with it first.
Talk your thinking through with me if you like - when you're confident, submit your answer and I'll grade it like a real screen (7/10 or better passes). Discussion and graded submissions share your five interviewer interactions, so spend them well.
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.