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Front and back ends refer to the beginning and ending points that delineate computer hardware and user layers. The front end works at the top layer and interacts directly with end users. The back end refers to indirectly linked devices that respond to end user activities or requests, e.g., routers, network servers and e-mail servers.
Front and back ends are the beginning and ending points of any software or network processing system.
The front end, which is the hardware device that protects the computer from traffic, is placed at the network link’s outer boundary. The back end is comprised of routers and/or servers (e.g., database and Web). Front and back ends have a broad application scope. The application’s front end receives direct user input, and the back end collects and manages user-inputted data.