I am also listening to this lecture and studying it well. As I listen to each lecture, I find it very helpful to learn about why these technologies are used. Rather than simply following the usage method and solving the problems I encounter at the moment, I think a little more about the advantages and disadvantages of using these technologies, trade-offs, etc., and it helps me a lot to approach the technology with confidence. It is fun to connect and map the theoretical parts and the things I learn through practice. I will continue to wait for good lectures in the future. Thank you.