I am taking classes at a national academy and listening to Mr. Kim Young-han's lectures. I think I am listening to this episode while paying for other lectures to help my team members as I am starting a team project. Thank you for creating such a useful lecture and explaining it in more detail than what I already know! I feel more touched because it is the lecture closest to the actual work. I felt like giving up on development every day and was discouraged, but after listening to this lecture, those thoughts are gradually disappearing and I feel like I am gaining confidence in development. I feel like I will work hard even if it is difficult when I enter the field later. Thank you again! Oh, and I recommended Mr. Kim Young-han's lectures to other people, and they seem to have paid for them. Oh, the introduction was too long. Thank you. I hope you always stay healthy and come out with good lectures later. I am waiting for a lecture that only has design patterns and Spring Security!