Your question is Parallel Copy Files in ADF. 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).
How to parallel copy files using ADF? Explain how you would configure source partitioning, ForEach concurrency, copy activity settings, and sink write behavior for large file sets. Keep the answer focused on practical pipeline design, scaling limits, and failure handling.