Amazon Senior Project Manager interview questions

I applied through Linkedin for the position of Senior Product Manager (AWS Mobile services). I received a screening phone call from the HR who referred me to the Product Director. During the call, I was asked many questions about my previous work experience. More questions about products that I like (IT or otherwise) and why. Customer orientation is a key during all interviews. I was then referred to a product manager for a second interview. If you are not familiar with Case interviews, you should read "Case in Point". The interviewer asked about whether to invest in a service or discontinue it. The key is to show the line of though rather than an exact answer. A third interview was set with another product manager. This time it was more specific about AWS products and what can be added to the line of products they offer and why. Another case was then brought forward "If you were to launch a back up cloud service, would you approve?" I did not reach the next step of the interview process as I stumbled in my answer.