Tried rooftopslushie.com mentioned above and found this...
You will have a phone screen to begin with. After you clear the screening, you will called for an onsite round. Based on the level (L3/L4/L5), you will have 4-5 rounds in person. Out of these, there will be a couple of technical rounds and a couple of behavioral rounds. Behavioral rounds will be mostly to judge you on the famed Leadership Principles of Amazon. So, make sure that you have gone through them and have scenarios from your past experiences where you have reflected those LPs in your career.
Hope this can help everyone!