The concept of the lecture was really good~ But there was almost no detailed lecture content related to Map API~ It seemed like a lecture that was just following the code. The parts that were lacking were personally supplemented to some extent by following the official Map documentation~ But the official documentation also includes Jquery, so... In order to fully understand and use the codes used in this lecture, I think I would have to invest time and study the MAP API provided by Naver and Kakao on my own to be able to follow along. And because it was called Corona Map~ I thought it would be a lecture on displaying Corona-related data on a map, But it was a basic MAP lecture that simply searched the map, created a marker, and displayed it on the map. After finishing it~ The title was^^ With Corona Map Developers~~ It wasn't about creating a Corona Map service~