Until now, when I studied Kuber, I had a hard time explaining it beyond a one-dimensional short answer when someone asked me to explain it.. The lecture has a lot of animations, so it was very helpful for understanding the order of each operation and the principle. (For example, the correlation between the metrics server and HPA) The provided example code and explanation of the code are sufficient, so I think it will be very helpful when writing YAML. I would like to recommend it to everyone who uses Kubernetes for work or has a job that requires answering customers' inquiries about Kuber.