Cloud in cloud computing represents what?

Question: Cloud in cloud computing represents what?

The cloud" refers to servers that are  accessed over the Internet, and the software and databases that run on those servers. Cloud computing is a general term for anything that involves delivering hosted services over the internet. These services are divided into three main categories: (1)infrastructure as a service (IaaS), (2)platform as a service (PaaS) and(3) software as a service (SaaS).