Server systems are powerful computers designed to manage, store, and process data for other computers, known as clients. They provide various services, such as hosting websites, managing databases, and running applications. Server systems can be physical machines or virtual instances, and they often operate in data centers to ensure reliability and security. These systems typically run on specialized software called operating systems, such as Linux or Windows Server. They are equipped with high-performance hardware, including multiple processors, large amounts of memory, and extensive storage capacity, to handle multiple requests simultaneously and ensure efficient operation for users and applications.