I am a junior who uses Spring in my work. I took the course because I was curious about the lecture, and it was good because I could learn both HTTP and Socket communication. In the case of HTTP, everyone uses it, and I know JPA to some extent?? So I took the course with the idea of reviewing it. I didn't deal with Socket, but I was able to briefly understand why it should be used, in what situations it is efficient, and why it is efficient. I was also able to implement a simple implementation accordingly. Rather than feeling like the lecture taught me everything, I felt like it showed me the right path. It felt like it taught me what development methods and what I should study for development. Thank you for the great lecture.