It was good to get hints to think about system design through various cases! These days, as the cloud is the trend, there are various services, and it seems important to combine those services well to create an appropriate architecture. System design is like a vast ocean, so there are many cases where you wander around looking for the right answer, and it seems even more difficult to find a case that fits you 100%. So I think it is important to see and hear more diverse cases. In the lecture, each engineer gives a compact explanation of various system designs. I also got inspiration from this lecture and it was very helpful. In addition, since you consistently upload additional videos, I feel that the value of the lecture is increasing! You even provided lecture materials, so it was good to review on my own! Thank you for making a great lecture! 😊