Amazon SDE-1 interview questions

I got mail from Amazon London for SDE 1, the process was smooth and I also went to London for onsite interview. First Round: Online Assessment (2 Coding questions Easy+Medium) Second Round: Virtual interview with senior guy (questions related to trees traversal , current work) ..basically screening round before onsite interview. Onsite Interviews (each round of 1 hour divided into 2 parts : 30 minute behavioural question and 30 minutes Technical): Third Round: Low level design of Lift with some advance features, some question related to Amazon leadership principle. Fourth Round: Coding question related to Tree/array + some question related to Amazon leadership principle. Fifth Round: Interviewer presented me some C++ code, I had to review it + discussion on current work + some question related to Amazon leadership principle. Sixth round: Tree traversal question (leetcode medium ) + some question related to Amazon leadership principle. Seventh round : Don't remember the question + some question related to Amazon leadership principle. and in same week I got a call from recruiter and got the offer.