It had been a long time since I fully completed a course, but I listened to every lecture from start to finish. This course taught me not only how to develop apps, but also how to make effective use of Claude itself. In particular, I think this course was even more helpful because I am currently at the stage just before implementing the service I want to create. By using AI to build an actual service, I was able to apply features such as a database, login, and deployment one by one, and experience the entire process of creating a complete service. What I liked most was that the course didn’t end with simply creating the service. It also covered how to operate and monitor it after deployment, where to start looking when a problem occurs, and what areas to review and think about in order to improve the service. This was the first course I had taken that covered everything from the app development process through what comes afterward. The materials provided with the course were also excellent. They were useful for reviewing parts I didn’t understand while taking the lectures, and I think I’ll continue referring to them when I create my own service later. Rather than simply introducing new AI tools or explaining how to use them and then stopping there, the instructor seemed genuinely focused on helping students properly understand the material and become capable of building and operating services on their own afterward. That’s why I think the term 'all-in-one' suits this course so well. By learning everything from the important principles to follow when vibe coding, how to use agents, and how to verify the results of development, I think I’ve also gained some understanding of the difference between 'having AI write code' and 'developing properly with AI'. Based on what I learned in this course, I’m going to try building the service I have planned myself. Thank you for the excellent course.