I applied on around 9th sepetmeber for SDE intern position Summer 2022 at Amazon and received my 1st OA on around mid October which consisted of 2 questions:

1st OA:
Q1. First occurence of Unique(Non-duplicate) character
https://leetcode.com/problems/first-unique-character-in-a-string/

Q2:Find the nth factor of the given number,
https://leetcode.com/problems/the-kth-factor-of-n/

I solved both these questions and I received my second round after 24 hours of completing this round

2nd Round: Workstyle Assesment
This was workstyle Assesment where you are required to answer all the questions based on the alignment with Amazon Leadership Principles:
https://www.amazon.jobs/en/principles
You also get a debugging question that you are required to solve correctly.

If they find that you have solved all of these correctly and your personality aligns with their principles. You get an interview call which is the final round during internship:

Round 3; Virtual Interview (FInal Round)
I got the confirmation mail after two weeks of my 2nd round and I was required to select an interview date from the given dates in which you are asked two behavioural question and one tehcnical Question.
For the preparation of behavioural question, I would suggest to go through the below link:
https://medium.com/@scarletinked/are-you-the-leader-were-looking-for-interviewing-at-amazon-8301d787815d

And for technical try to solve as much Amazon Favourite LC medium question as you can.

During my interview, these were the following questions that I got:
1st Behaviorual Question:
Tell me about a time when you went over and beyond for a client in your project? (Customer Obsession)
2nd Behaviorual Question:
Tell me about a time when you took calculated risk in your project? (Bias for Action)

Then he asked me little bit of data structure questions about tree traversal, tree searching, and hashmap.

Technical Question:
He gave Merge Intervals to solve
https://leetcode.com/problems/merge-intervals/

{My personal opinion is even though you know how to solve the questions, think about all the test cases really hard before jumping to the solution since the interview is on whiteboard and you will not know where your code is going to fail if you dont think about the testcases correctly.}

Hope, this helps someone who is preparing for the interviews.