I had given up on studying Spring by buying a book and studying on my own in the past, but I have been studying Spring from the introduction to the basics naturally through the instructor's roadmap. The lecture on how Spring developed from the case before it was introduced and how it is currently using this technology was really good, and it was even easier to understand because the errors or screens that were intentionally shown while doing the code one by one by hand were the same as the lecture. I thought it would have been better if I had taken this lecture sooner, so I bought the future lectures in advance. You mentioned feedback in the last lecture, but in my opinion, it was just a fun and informative lecture, so I didn't feel any regrets. Thank you.