Instead of buying software and software licences and then having to keep updating that software yourself, cloud computing places that software in online secure facilities. You and your staff simply login to access the software and the associated data. All your local desktop or laptop requires to access the software is a Web Browser like Google Chrome, Firefox, Interner Explorer or a Mobile App.

An example is, if you use an email service like Gmail or Hotmail - this is Cloud Email Computing in action.