Modules | ... Apache HTTP Server Version 2.2 . ... The Apache HTTP Server is a modular program where the administrator can choose the functionality to include in the server by selecting a set of modules. ... Alternatively, modules can be compiled as Dynamic Shared Objects (DSOs) that exist separately from the main httpd binary file. ... Related Modules . ... The DSO support for loading individual Apache modules is based on a module named mod_so which must be statically compiled into the Apache core. ...