Hello, Kim Jeong-hyun! Thank you so much for being so persistent and leaving such a great review😊😊 When I was making this course, I thought a lot about how to easily explain the process of deploying and using the ELK monitoring system on k8s. I'm so happy and proud that you were able to quickly understand the ELK stack.😊 I will use the review and star rating you left as nourishment and strive to provide better courses and knowledge sharing in the future. Thank you!