After changing jobs, I started taking classes with a sense of emptiness as I was using asp.net core for the first time in my work, but I finished the course after just one class~! I wanted to learn by looking at various developers' codes, so I studied while taking other classes. This class is a little difficult for beginners, but it was a great help because I was able to see codes that can be applied directly in practice, such as claim authentication, logging, and session processing. Thank you!