I bought the course 2 years ago, and I'm running the roadmap to correct myself, who has become lazy because of work and games. It's been 2 years since I joined the company.. I started late as a non-major and thought I studied hard after work what I needed for work, but as time passed, I couldn't confidently answer the question, 'Do I really know Spring?'. I started from the introductory course to MVC 1, but... I feel dizzy(?) as if I've been hit in the head with a hammer. I didn't know Spring. Even at my current company, Spring is used in a very classical way, and not only annotation-based, but Spring Boot isn't used at all. The company's products are much more complex than I thought, so it took me almost 2 years to understand them.. I didn't know Spring to the point where I felt like it was a waste of time. That's why I really enjoy listening to Professor Kim Young-han's lectures. There are some parts that make me think, 'Ah, this is it', and there are also parts that I'm completely new to. Now, I'm going to finish both of Mr. Kim Young-han's roadmaps and aim for a higher company. Those who are working as a junior developer like me, but are hesitant to say that they 'know' Spring, just listen to it unconditionally! I recently saw a notice that you're taking on a new path as an educator, and I sincerely hope that the path you take is filled with flowers! I look forward to your future lectures, Mr. Kim!