INTERNET SERVER APPLICATION PROGRAM INTERFACE

INTERNET SERVER APPLICATION PROGRAM INTERFACE

INTRODUCTION:

ISAPI is an interface to hypertext transfer protocol (HTTP) servers that allow the
developers to extend web servers and provide an unexpected degree of functionality. ISAPI extensions (also called server applications) and filters allow the server to be extended in ways that common gateway interface (CGI) or its competing interfaces never could.
Simply stated, an ISAPI – Internet Server Application Program Interface – is a set of Windows program calls that allow you to write a Web server application that is faster than a CGI.
ISAPI is a high-performance, scalable solution for developers who want to create dynamic web sites. These sites have to be able to handle high request rates without degrading the HTTP server's performance. ISAPI was developed by Process Software in collaboration with Microsoft Corporation and other web server vendors. The formal specification was released in March 1996 by both companies.


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