This is the lecture I've been looking for all this time 😭😭 Even though I wanted to create a profitable service, the information was fragmented, but this lecture tells me everything, so it was a really, really, really big help 😭😭 And it's not just about the development details, but also, It was even better because you explained it based on your experience of operating a service with a lot of traffic, so I understood it better!! Above all, I liked that it was based on stacks that could be started with 0 won. (Of course, it's not completely 0 won like domain costs) I think the real value of this lecture is that I have become 'able' to create and operate my own profit-generating website with the content I learned!!! You also teach me how to respond in different languages, so I will launch a global service and create successful profits. Thank you so much for creating this kind of profitable lecture!