Here is my talk in Hanoi University of Science and Technology. The students came from many majors with different backgrounds challenged me, required another approach. Good-enough with less effort is the best way today. My thanks are sent to the authors of 2 slides below, the great ideas and contents helped me save times.

https://www.slideshare.net/hawkmanacademy/introduction-to-devops-69870752

https://www.slideshare.net/sgganesh/devops-a-gentle-introduction