"The vast majority of Web sites you visit are presumably open to Internet access, but many companies have found that Intranet development has its place. However, you can take this further--you can develop perfectly functional Web applications that will never send so much as a single packet over a network interface. Experienced Web developers sometimes find themselves struggling to learn a GUI toolkit when a simple CGI script would serve their needs perfectly well.
"A local-only Web application is, if anything, much simpler than one intended for general use. You can easily set browser requirements, and server performance is very unlikely to be an issue. Simple applications, using standard CGI form widgets and the like, can be written in a fraction of the time required for development of self-contained applications. Applications that are built around forms or data manipulation are often excellent candidates for implementation as a trivial Web service..."
