After completing this course over about 8 days, I highly recommend this lecture. The biggest advantage is that each section helps develop the 'thinking power' itself - how to think about business requirements. The domain knowledge covered in the course will also serve as an excellent introduction for those interested in the commerce field. Personally, I believe this course maximizes its value not just by organizing content, but when you expand requirements and improve code on your own based on the knowledge and direction you've learned. I think this is what the instructor truly hopes for from students. Above all, the example code quality is good, and I was grateful for the many parts I could learn from and experiment with in that code. (Additional) If I may dare to give feedback, it would be great if you could cover technical 'exception handling' considerations in detail beyond business logic. For example, practical content like handling external network errors, retry policies, and how to consistently recover data when specific logic fails would be tremendously helpful if included in future 'intermediate' or 'advanced' editions!