I took the course for about two months and finally finished it today. In fact, before taking this course, I had a bad idea that I didn't need to know about Spring AOP because I was a junior, and that I wouldn't need to use it right away, so I could learn it later. However, I heard a CTO on the YouTube eo channel say, "Developers should have the mindset that they are holding the steering wheel." So I reflected on my wrong thoughts and signed up for this course. It was really good. It wasn't easy at all, but it was fun to understand the background of why the concept of AOP was created and write code. ㅎㅎ I plan to review this course again in the future. I won't forget the memory of you signing my palm at Infcon and will steadily move forward. Thank you!