In the Spring Complete Conquest series, MVC2 Utilization has a title like an extra, but I personally think it is a course that contains the most important elements. Beginners often finish the introductory book without learning the process like MVC2, and it is not common to learn how to apply the details afterward. This phenomenon is a common feeling of frustration experienced by beginners after other programming courses. However, this lecture does not feel that way. For example, it does not stay at the introductory level by learning the login process, but the key is to include what must be done in the query column so that learners do not waste time. This lecture makes you think about many things. Thank you, instructor!