AZ400-Q: stop a bad rolling deployment
A rolling deployment updates instances in batches. After the first batch, error rate exceeds the agreed threshold. What should the pipeline do?
- A) Stop promotion, preserve evidence, and execute the defined rollback/mitigation path. ✓
- B) Continue to all instances to make versions consistent.
- C) Delete monitoring data.
- D) Increase the batch size.
Answer: A. Progressive deployment only reduces risk when health evidence can stop promotion and trigger a prepared response.
Why not the others: Continuing/increasing exposure expands the incident; deleting evidence prevents diagnosis.