Solutions architects and functional analysts work side-by-side within any organization. The functional analyst's role is to look at the organization's processes, procedures, and guidelines to ensure they are effective in helping the company attain its business objectives. The solutions architect converts these business strategies into IT services the organization uses to conduct its business. These two teams must collaborate effectively to achieve this goal. The Amazon interviewer wants to ensure that not only are you aware of this, but you also have experience working with functional analysts.