CGI stands for Computer Generated Imagery and refers to the use of computer graphics to create or enhance visual content for film, television, video games, and other forms of media. CGI is a broad term that encompasses many different techniques and applications, including 3D modeling, animation, special effects, and virtual reality. In film and television, CGI is commonly used to create realistic environments and creatures that would be difficult or impossible to film in real life. In video games, CGI is used to create immersive worlds and realistic characters. CGI can also be used in advertising, architecture, product design, and many other fields.
In web development, CGI stands for Common Gateway Interface, which is a standard that allows a web server to execute external programs or scripts. These CGI scripts can be written in various programming languages such as Perl, Python, or Ruby, and are used to process form data, generate dynamic content, or interacting with databases. While CGI was a popular technique for web development in the early days of the internet, it has since been largely replaced by other technologies such as PHP, ASP.NET, and Node.js, which provide more efficient and powerful ways of processing dynamic content on the web.