Common Gateway Interface (CGI) is a server-side interface for initiating software services. Software that handles input and output in accordance with the CGI standard is considered a CGI application. For example, when a user submits a form through a Web browser, the server executes an application, known as a CGI script, and passes the user's input information to that application by using CGI. The application then returns information to the server by using CGI. Active Server Pages (ASP) technology is a high-performance alternative to CGI.
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