Cloud Computing is the service help you delivery, access, and manage data and certain programs from the Internet (it is not something about counting clouds) on a pay-for-use basis. The cloud stands for the Internet.
Because of the wide connection of the Internet and the expanded business requires, cloud computing is the way that helps reduce cost, accelerate progress, increase security and productivity, and enlarge connection of the network. Since the services, data, applications, and certain programs can be accessed from the Internet, people can only pay for the specific ones they want and can access everywhere with the Internet.
There are three types of clouds: public cloud, private cloud, and hybrid cloud. The public cloud are owned and operated by third-party cloud service providers like IBM public cloud and Microsoft Azure. Private clouds are operated within certain business or organizations; the hybrid cloud id the combination of the two others, allowing the connecting between them. The cloud computing supports mainly four services, which are infrastructure as a service (IaaS), platform as a service (PaaS), software as a service (SaaS).