3 Online Assessments, First was 7-debugging questions in 20 minutes, the second was 2 Leetcode-style questions in about 50 minutes (plus/minus) and the third was a 2-hour long simulation where you reacted to problems, emails, and code reviews as if you were an actual software developer at Amazon.
After all that, I met with an Amazon employee virtually and I was asked some technical questions and some questions relating to their Leadership Principles.