A small device that acts as a "bridge or link" between the employee (at the branch) and the main server, to open the system and files without the need for a full computer. Where is the data stored? The zero client device does not contain any files or systems; everything is stored and fully protected within the main server only. The difference between it and a regular computer: Components: It does not contain (hard disk, RAM, or processor), but only needs a screen, mouse, and keyboard. Cost: Much more economical in purchase and electricity consumption compared to a computer. Maintenance and Updates: It does not require hardware upgrades or periodic maintenance because it does not contain parts that can be damaged like a computer. Space and Environment: Its size is very small, and it does not emit any heat or noise.