Amazon Non Software Development Engineer interview questions

3 interviews of 45 minutes each - 2 design problems(metro planner and one more)..involved using most efficient data structures(hash map, BST, linked lists), - merge two BST - keep versions of a stack most efficiently

It was my second phone interview after a first phone interview 3 weeks back and a coding assignment. The interview surprisingly did not have any coding questions (although the first interview had coding). Most of the questions were related to OOPS/Scaling/DNS