Cloud Computing is a platform for delivering computing services over the Internet.   These services are broadly defined but are also typically referred to as Infrastructure-as-a-Service (IaaS) or Software-as-a-Service (SaaS).  Typically, cloud computing customers do not own the physical infrastructure (servers, network equipment, etc), instead avoiding CAPEX and instead only pay for usage to a cloud hosting provider (like Amazon, Salesforce.com, Google, etc).  In addition to saving on CAPEX, other features include: