Описание тега backend
For questions involving the data processing components of a system. These components are typically called to from the user interface or business layer components, rather than interacting directly with the end-user.
Questions pertaining to a component in the “back half” of an application, that is, not user-facing. Typically, this component is called from user interface or business layer components to perform processing actions, rather than interacting directly with the end-user.
This may include layers as far back as the data storage component such as a database server.