I applied through a recruiter. The process took 3 months. I interviewed at Amazon (Dallas, TX) in Jan 2016
Interview
Initial phone screen. Caller was on time and friendly. Interview lasted about 45 minutes. About 6 behavioral questions, one math question. Afterward she gave me some feedback ( I asked) and said I would hear something within a week. But I didn't hear back for over a month. Eventually I was asked back for a second interview on site, but I am still waiting for that to be coordinated.
Star Method and Leadership Principles. Just study these from the materials they give you, and form a story for each principle, and when they ask questions, you can see which principle they are asking about.
Interview questions [1]
Question 1
Tell me about a time you faced a conflict or disagreement at work and how did you handle it?"
Multiple online tests after application, followed by a virtual interview with various staff. Staff did not want to be on camera and did not have many good things to say about working there.
Prior to even speaking to anyone about a possible interview there was a long and lengthy testing required. Really disappointing to finish with no feedback or additional details. I only received an email post test.