First of all using Email letter.
That was a Simulation of customer's requests
Write response to customer and internal employees.
They want to know how are you communication with them and attitude.
I applied through a recruiter. The process took 2 weeks. I interviewed at Amazon Web Services (New York, NY) in Nov 2020
Interview
Multi-stage interview. Mix of professional accomplishments and technical acumen. The interview process can take place over multiple weeks mostly dependent on your schedule. Do some research online helped as a refresher for the technical aspects of the interview. If you don’t understand something don’t be afraid to ask questions.