This is an online lecture I took because when I started working, I knew absolutely nothing about infrastructure, and my company told me to study it. 3 reasons why I highly recommend it First: In Section 1, it teaches you the process of creating an instance, all the way to deleting it. And when I thought I'd have to review and listen to the lecture again to move on to Section 2, it said that Section 2 would review how to create an instance again, and I thought, "Wow..! They truly understand beginners' minds." Second: The Q&A is really fast and they don't give vague answers. This seems like a really big advantage ㅇㅇ. When you take online lectures, errors pop up and you encounter things you don't know, but they always answer within a day. ㄹㅇgoat Third: The lecture notes are well-organized -> This is my personal opinion