**Section 1 — The Context (The 'Why')**
Customer feedback pipelines aggregate unstructured data from surveys, reviews, and social media into actionable insights. The primary challenge is handling high variance in volume (product launches spike), schema heterogeneity (different survey formats, languages), and the need for both real-time sentiment dashboards and batch NLP analysis....
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 Adidas. The answer also includes follow-up discussion points that interviewers commonly explore.
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