Extremely hard and requires extensive preparation. You need get yourself fully committed with Amazon leadership principles and work on scenarios for each of them. Basically create matrix of scenarios and answers.
Interview questions [1]
Question 1
Describe a situation where you had to take a risk.
I applied through other source. The process took 2 days. I interviewed at Amazon (Seattle, WA) in Mar 2014
Interview
The entire process was well managed and handled. The HR team was very professional and helpful.
Communication was clear, accurate, and efficient. The seven interviews during the day were increasingly difficult and challenging. As I had been forewarned, there was a "bar-raiser" interview towards the end of the day.
Interview questions [1]
Question 1
How have you handled a team member who is not meeting deadlines/responsibilities?
I applied through a recruiter. The process took 4 days. I interviewed at Amazon (Luxembourg) in May 2011
Interview
I was offered to take an online skill test comprising Excel, attention to detail tests, logic questions, marketing, etc. After that, I was required to repeat it in person two times, followed by a 1:1 interview. I was asked about my previous jobs and required to provide contact info for my former superiors. Also, personality questions.