Thank you, Son Jeongman! I sincerely appreciate you leaving such a valuable course review and positive feedback! 🙏 Your encouragement gives me great strength in preparing my lectures. If you've gained a deep understanding of Express.js structure and server engine design principles through this course, I'll continue preparing to bring you more practical topics and expanded content such as backend architecture, databases, and server operations in the future. 🚀 Also, with gratitude and encouragement, please feel free to use the open chat room below whenever you have questions or need help with development. You can communicate with fellow students, and I frequently visit to share concerns and discussions! 📮 Open Chat Room: [https://open.kakao.com/o/gC10Fnoh] I wholeheartedly support your development journey and look forward to seeing you again in the next course! 🌟