How to Summarize and Conclude a System Design Interview.

In Simple Words: In the final 3-5 minutes of an interview, don't wait for the interviewer to prompt you. Proactively summarize your architecture:

1. Recap Requirements: Confirm how the design satisfies initial functional and non-functional goals (e.g. 50K peak QPS, p99 < 50ms).
2. Review Trade-offs: Explicitly state why you chose NoSQL over SQL, or Eventual Consistency over Strong Consistency.
3. Identify Remaining Bottlenecks: Single points of failure (SPOF), cross-region replication lag, or database hot partitions.
4. Operationalization: Mention distributed tracing (OpenTelemetry), health checks, auto-scaling policies, and disaster recovery plans.