The Server & Client category encompasses technologies and systems that enable communication and data exchange between a central server and multiple client devices. Servers are powerful computers or software applications that store, manage, and process data, while clients are devices or software that access and request services from the server. This category includes networking protocols, software programs, and hardware components that facilitate the interaction between servers and clients. Server & Client systems are commonly used in various industries, such as web hosting, cloud computing, and online gaming, to enable efficient communication and data sharing between different devices and users.