One-line review This is the best lecture!! If you have experience in web-related development but do not know much about the HTTP protocol? If so, I recommend that you take this lecture as soon as possible to increase your growth rate! Purpose of taking this course I have done web development, but my knowledge of the HTTP protocol, which is the basis of the web, is very shallow, so I took this course. At best, I know about frequently used HTTP methods, HTTP features (stateless, connectionless), status codes, and message structures, but in fact, I did not know these things in depth, but only that they exist. So, I took this course because I wanted to gain knowledge from an experienced senior developer from a practical perspective. Review The lecture content is very informative!! Although you do not learn everything about HTTP, an experienced senior developer systematically explains the core knowledge of HTTP that is important in practice. Before taking this course, I was only able to use well-made WEB APIs provided by frameworks such as Spring and Flask at the hello world level. However, after completing that course, I think I can now do web development while thinking about how the API provided by the framework is related to HTTP! Thank you, Younghan!!