**Why it matters**: At scale, design choices directly impact reliability, latency, and cost. Wrong decisions compound across jobs and teams.
Azure lifecycle management (blob storage): auto-tier (hot to cool to archive), delete old versions. Complements ADF by: (1) Reducing storage cost for old data; (2) ADF focuses on movement/transformation; lifecycle handles retention; (3) Tier before ADF reads to optimize cost....
The complete answer continues with detailed implementation patterns, architectural trade-offs, and production-grade considerations. It covers performance optimization strategies, common pitfalls to avoid, and real-world examples from companies like Virtusa. The answer also includes follow-up discussion points that interviewers commonly explore.
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