Please discuss the concept of elasticity as used in your role as a solutions architect and how it contrasts with scalability.

As with any profession, some of the terminology used may have special meanings. The Amazon interviewer is asking you about a concept specific to your role as a solutions architect and to contrast it with another concept. Reviewing the terminology, processes, and procedures used in this job before the interview with Amazon will keep them fresh in your mind and allow you to easily respond to these types of questions. Knowing where to find the information is another way to respond to the question if you are unfamiliar with the topic.