This is a great lecture that I really want to praise. I was a new developer who was given the task of building MSA alone without a mentor, and I was struggling for 2-3 days even with a simple and small problem, so my progress was very slow. However, with this one lecture, I was able to solve 30 or 50 problems that I was struggling with at once. I really want to thank the instructor. From my perspective, it was worth more than 1 million won.