Editing Portal:SaaS and Web Development (section)

=== CGI::Application ===

As Perl web applications grew, developers needed better structure than one large CGI script full of `print` statements. One important response was '''CGI::Application'''. MetaCPAN describes CGI::Application as a framework for building reusable web applications, designed to make applications easier to design, write, and evolve while avoiding unnecessary dependence on a single toolset, operating system, or web server.<ref>MetaCPAN, “CGI::Application,” https://metacpan.org/pod/CGI%3A%3AApplication, accessed July 3, 2026.</ref>

CGI::Application encouraged a more organized model. Instead of a script being only a sequence of actions, an application could be divided into run modes. Each run mode represented a state or action, such as showing a form, saving data, displaying a record, or confirming a result.

This approach helped Perl developers write more maintainable CGI applications. It also worked with templating systems, plugins, and database layers. CGI::Application did not require mod_perl, but it could benefit from persistent environments.

CGI::Application is historically important because it represents a transitional stage in Perl web development. It was still close to CGI, but it moved Perl applications toward reusable structure, separation of concerns, and framework-style organization.