4 rounds. Each one has more than three BQ questions. I prepared 10 stories. 3 Coding and 1 OOD.

1. Word Break II https://leetcode.com/problems/word-break-ii/
2. Subarray sum equals K https://leetcode.com/problems/subarray-sum-equals-k/
3. Graph shortest path
4. OOD, user photo storage system

Of course, the questions are not the same as the original one. The interviewer changed the output requirement.

BQ is really important in Amazon interview. I think I did not good enough in first two rounds. But I still got the offer.