This lecture is perfect in terms of topic, content, and code... It's such a shame that it's hexagonal architecture. If it weren't for this, I'd give it 5 stars... I'm not even sure if hexagonal is a necessary architecture. ㅠㅠ Rather, the payment logic was harder to understand... I couldn't concentrate well because it was a lecture about payment. If it weren't for this, it would be perfect. The lecture materials are organized really neatly, so they're easy to understand, and I like that they put a lot of thought into editing. Hexagonal... If only this were excluded, it would be 100,000 points... I'm looking forward to the next lecture!