What is the full form of CGI?

full form of CGI
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CGI stands for “Common Gateway Interface.” It is a standard protocol used to generate dynamic content on web pages. CGI is a crucial component of modern web development and enables web developers to create interactive web pages that can receive input from users and respond to their requests.

In this article, we will discuss the full form of CGI, its history, how it works, and its importance in modern web development.

The History of CGI

The origins of CGI date back to the early 1990s, when web development was still in its infancy. At that time, the most common way to create a web page was to write static HTML code. However, as the web became more popular, developers began to explore ways to create more interactive and dynamic web pages.

The first version of CGI was developed in 1993 by the National Center for Supercomputing Applications (NCSA) at the University of Illinois. It was designed to allow web servers to communicate with external programs and scripts, enabling developers to create more dynamic web pages.

How CGI Works

CGI works by establishing a communication link between a web server and an external program or script. When a user sends a request to a web page that contains CGI scripts, the server invokes the CGI script and passes it the user’s input as arguments.

The CGI script can then perform various tasks, such as querying a database, generating dynamic content, or processing user input. Once the script has completed its task, it sends its output back to the web server, which then sends it back to the user’s browser for display.

The Importance of CGI in Modern Web Development

CGI is a critical component of modern web development, as it enables developers to create dynamic and interactive web pages. It allows web pages to be customized based on user input, making them more engaging and responsive.

One of the most common uses of CGI is in web forms. Web forms allow users to enter information into a web page and submit it to the server for processing. CGI scripts can then process the user’s input and generate a response, such as a confirmation page or an error message.

CGI is also used extensively in e-commerce applications, where it is used to process orders, generate receipts, and manage inventory. It is also used in content management systems, where it is used to generate dynamic content, such as blog posts, news articles, and product listings.


In conclusion, CGI is an essential component of modern web development. It enables developers to create dynamic and interactive web pages that can respond to user input and generate customized content. CGI has come a long way since its inception in the early 1990s and has played a vital role in the evolution of the web. Understanding the full form of CGI and its importance in web development is essential for anyone looking to build dynamic and engaging web pages.

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