The lecture was really informative and good! I learned why the basic controller annotations that I usually used in the field are used, and more deeply, why they work this way. Based on this, when I build a new project, I think I will be able to write better code than before taking this lecture. In particular, the way the lecture gradually fixes the code and shows how it reaches the currently commercialized spring structure was really good for understanding. One thing that is regrettable is that spring initializer has been continuously updated since the first lecture, so there are times when the setup is a little difficult for those who come later to the lecture. Still, it was a useful and good time! Thank you.