I applied online. The process took 4 months. I interviewed at Amazon in Feb 2018
Interview
2 Online Assessments, first one was logical reasoning test and a debugging test. Both were very easy and honestly thought everyone should pass them.
Second online assessment was a typical coding challenge and was not too difficult from what I remember. I do not remember what question was asked on this part.
Afterwards, there was an 1 on 1 interview through video chat.
I applied online. The process took 2 weeks. I interviewed at Amazon in Jan 2018
Interview
A couple online quizzes and coding challenges, and then phone screen. The quizzes were trivial, and the coding challenge and phone screen were traditional software engineering questions (think crack the coding interview)
I applied through college or university. The process took 2 weeks. I interviewed at Amazon (College Park, MD) in Oct 2017
Interview
I had a 2.5 hour test on campus followed by one 45 minute phone interview. The campus assessment was divided into 1) Logic/Debugging, and 2) Coding/Behavioral Questions (it was a combination of OA1 and OA2 if you don't take it on campus)
Interview questions [1]
Question 1
IQ/Logic/Debugging questions, tree and linked list questions