I've only known about Docker so far, but since it's a new field, I've never really applied it because it feels so difficult. Through this lecture, I learned about proxy connected to Docker, engine X, and deployment via https instead of http, so I highly recommend it because you can deploy a stable web service by yourself without a backend developer. In fact, in the field, backend developers don't really teach us about deployment and related areas, so I had a hard time, but after listening to this lecture, I gained confidence and am currently applying it to my service. Above all, I think it's a great fortune in DevOps to share lectures and materials of this quality at this price. If you're thinking about it, don't hesitate and definitely listen! I'm looking forward to other lectures!