Web based applications only require a web browser, they can be accessed from anywhere, one user is not tied to one machine and upgrades are easy as they do not need to be deployed to each user.
 
 
 




 
     
  How it works  
  A User (Client) sends an information request from a web browser. This could be using a PC based browser or some other means such as a WAP/I-Mode phone or PDA.

The information request is sent to a web server via the relevant network medium, this could be the Internet, an Intranet or an extranet.
 
     
  The Application server retrieves information from its data sources and performs the necessary calculations to fulfil the request. These could be databases and/or legacy systems. The result is then sent back to the requesting client.

Users can be your customers, your staff or both depending upon the application.