It took a lot of time to write while using only LIB and implementing MVC and MVVM through pure JS. However, I think it has become a huge asset now that I have succeeded in the challenge that I have done alone. It may be easy to just listen and follow along, but I gained a lot when I challenged myself and achieved my goal through advancement, and saw the solution process. I got a good opportunity to experience deep-rooted JS through this lecture. It has been about 2 years since it was released, but it was a process that made me think a lot as a job seeker. Above all, the learning method through Git branch was very efficient. Thank you for making such a great lecture.