I just passed my AWS DevOps certification exam and this course was an important part of preparing for it. I would say the questions and explanations were of a higher quality than the WhizLabs ones. Possibly the Stephane Maarek test quiz on Udemy is more similar in quality and difficulty to the actual exam, however there’s only the one set of 75 questions, and here there’s 150. As a comment though, I found there were a couple of questions about CodeGuru and CodeArtifact that isn’t covered at all here. Highly recommended!