OA (Online Assessment) on Hackerrank consisting of a coding part (2 leetcodes) and a pretty long behavioral. They simulate real work scenario and you have to reply (multiple choice questions) how you would behave in a certain situation

2 leetcode mediums, 1 is on the slightly easier side, basic big O time complexity space complexity asked etc . . . also went over resume and behavioral leadership principles

I got LeetCode questions and 3 Behavioral questions (satisfying Amazon Leadership with the STAR method). The Leetcode question is based on a conceptual tree-related question, and I completed my behavior round well. Everything went smoothly. The no.of questions varies based on interviewer.