Hello. Dumbbelloper This lecture helped me a lot in organizing and creating projects with clean architecture. The regrettable points are, 1. Since it is for lectures, it would be good to enlarge the Xcode font. Usually, students watch the video and code according to Xcode, so they do not watch the lecture in full screen but fold it in half. 2. It is regrettable that I could only see R among CRUD in the API. I wish there were all CRUD samples.