I was able to quickly look over the core technologies of the Spring Framework! I am a student who became interested in the core technologies of the Spring Framework and started studying them. As the title of the evaluation suggests, it was good to be able to quickly look over the core technologies, and it was good to be able to quickly organize the concepts by digging in appropriately. Personally, if there is one thing I regret, it would have been better if there had been a section where I could review the concepts I learned, or at least create a simple project that could apply DI and AOP. However, I think that this would be burdensome for Baek Gi-seon, who gave the lecture. Anyway, I would like to leave a comment saying that it was good to be able to study the core technologies of Spring, such as DI and AOP. I would like to thank Baek Gi-seon for creating this lecture.