Starting from the first day of the new year, I continued to take the class for 3 days and just listened to the instructor's voice, so I finished the course before I knew it^^ I also really enjoyed this lecture. Lesson advantages 1. The project creation part is in a version before Spring, but I checked the pdf and saw that it is continuously updated. It is hard to keep updating like this, so you are really amazing! 2. As mentioned in the JPA basics lecture, domain analysis and design are covered again. The learning method of first analyzing and designing the domain and then developing each domain unit was really good. He explains how many advantages there are to developing with DDD based on each entity. I also liked the part where he explains it in comparison with transaction scripts. (I think the key point in this lecture is number 2. You should focus on the chapter on developing the order domain!) 3. He explains Thymeleaf and the web layer. It shows you various ways to transfer data using Thymeleaf, and also explains change detection and merging. (Make sure to use change detection!) 4. Q&A I took the lecture while checking all the answers to the questions asked by many people. I checked all the parts that the instructor answered, and there were so many helpful answers. 5. I also checked that a revised version will be released when JPA 3.0 comes out^^ I will enjoy the next lecture as well. Thank you for making a great lecture.