This is an excellent course for getting the big picture of system design! The instructor pinpointed and explained concepts that I had heard about somewhere before but never fully understood, which really broadened my knowledge. In particular, by focusing on 'why' rather than 'how', I was able to realize that there are no correct answers in design and that everything is the result of trade-offs. Also, through this course, I was able to get a sense of which parts of my projects I should focus on when appealing in interviews. I highly recommend this course to anyone who is learning system design for the first time or preparing for interview preparation!!