Cloud computing is a kind of distributed computing. It refers to the decomposition of huge data calculation processing programs into countless small programs through the network "cloud". Then, through the system composed of multiple servers, processing and analyzing these small programs to obtain the results and return to the user. After ten years of development, cloud computing has become a very mature and efficient technology, and has achieved very good results in terms of computing power and energy consumption. In the COVID-19 epidemic, a large number of students began to use online classrooms for learning, and the demand for computing power surged. Cloud computing solves this problem elegantly through its elasticity and dynamic characteristics. This lecture will introduce the basic principles, features and advantages of cloud computing. Then introduce the research of the latest frontier areas, pointing out the current open issues and possible directions of cloud computing. Through this lecture, it will help to better understand cloud computing and learn about the latest research hotspots.
