Chapter 14. Middleware and XML

CGI programming has been used to make individual web applications from simple guestbooks to complex programs such as a calendar capable of managing the schedules of large groups. Traditionally, these programs have been limited to displaying data and receiving input directly from users.

However, as with all popular technologies, CGI is being pushed beyond these traditional uses. Going beyond CGI applications that interact with users, the focus of this chapter is on how CGI can be a powerful means of communicating with other programs.