The difficulty level of the lecture is not challenging enough!

It is difficult, but it helps a lot.

While some parts are easy to understand through hands-on practice, there are often explanations that require referring to beginner-level courses. It would be better if it could be consolidated into a single course. Also, the reference PDF has minimal explanations, so it's better to take notes directly while watching the lectures.

There seems to be quite a gap between the current AWS version and the version used in the course. I studied the RDS section today, and while the course shows that you can create a new instance directly when creating RDS, it doesn't seem to work in the current version. Also, I couldn't proceed with the Putty section because methods like saving after writing HTML are no longer available. I think some level of updates are necessary.

It's great that you explain things in an easy-to-understand way at a low level.