RES-Reach interacts with the Web server using the CGI (Common Gateway Interface) specification. The CGI specification is a method for Web servers, typically receiving requests for specific files, to execute programs. Traditionally this is done using a set of special-purpose Perl scripts or C programs that the user must write.

RES-Reach uses this CGI capability and handles all the interaction with the Web. The Web server invokes your Reach application whenever a dynamically-generated page or database action is required. RES-Reach has already taken care of everything required to provide the robust and secure environment needed to run your application over the Web.