What Does Fast Common Gateway Interface (FastCGI) Mean?
Fast Common Gateway Interface (FastCGI) is a standard protocol for interfacing external applications to Web servers. It is a feature-enhanced version of the existing standard Common Gateway Interface (CGI). FastCGI remains the preferred choice over CGI and other proprietary server application programming interfaces (APIs) because its features are fast, open and maintainable. However, FastCGI remains a proposed open standard and is not yet widely used.
Techopedia Explains Fast Common Gateway Interface (FastCGI)
FastCGI extends and enhances the CGI model in several ways: