back end

The back end of the operation is kept out of sight of the customers.

Together, the MathDocument and PaperController classes comprise the MathPaper application's front end, while the Evaluator makes up the application's back end. This technique of having separate front and back ends is a common […]

so-called “back end” deals is speculative at best. Ideally, the author or book publisher will secure a percentage of gross revenues rather than net profits, but such deals are rare indeed.