It was a good lecture that made me look back on myself who had vague knowledge about Spring. Despite being a free lecture, it was not a promotional free lecture that recommended other paid lectures, but a lecture where I could learn a lot. Thank you for the great lecture. While developing in the field, I felt like time was passing and I was only using old technologies without developing. This lecture made me want to develop again and made me think that I should study harder. You said that you planned to take all the Spring lectures by 2021, but it's too bad that you couldn't do it as planned. ㅠㅠ I heard that the last plan, Spring Boot, is "scheduled" for June 2022! I will master JPA completely by June.