**Flow**: Product backlog (prioritized); new items added and ordered by value. Sprint planning—top items pulled. Backlog refinement—clarify, estimate. Mid-sprint: negotiate with PO; can add if capacity or swap. Backlog is dynamic. Large requests: split into stories, prioritize....
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 Ford. The answer also includes follow-up discussion points that interviewers commonly explore.
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