A software that's not appearent to the user as it is managed by the frontend belonging to it.
One of two high-level modules required for a Udanax Green hypertext system. The backend is responsible for document and version storage, link management and editing. In many installations it will run on a more powerful computer networked to the individual workstation where users work. (See "frontend".)
A "backend" application or program serves indirectly in support of the frontend services, usually by being closer to the required resource or having the capability to communicate with the required resource. The connection to Wirecard over HTTPS or XML-Client Software is a backend integration, in contrast to CLICK2PAY (frontend).