An image map that is processed on the server-side rather than the client-side. Most image maps are now client-side. See client-side image map, image map.
An image map which resides on the server; this is expressed as a href surrounding an image tag and resides in the cgi-bin.
A server-side image map requires a script, or set of instructions, from the server to display the active regions of the image map. The client-side image map is preferred for accessibility.
An image map where the coordinate information and "URL" information is present on the server. This is an older technology and, for the most part, has been replaced by client-side image maps.
An image map that passes the mouse pointer coordinates to a CGI handler routine on the server, and requires the server to compute the target URL of the hyperlink based on the mouse pointer coordinates.
Image maps that are processed by the server.
The most widespread type of clickable image mapping. This type of mapping requires the server that the Web page resides on to do all the processing. The sequence of events that returns the desired result is more involved in this type than in client-side image mapping, and therefore not as fast.
An image map that passes the coordinates of the cursor to a CGI handler routine on the server. Server-side maps require your server to compute the target URL of the hyperlink based on the cursor coordinates.