Distributed computing systems are networks of computers that work together to perform tasks. Instead of relying on a single machine, these systems divide the workload among multiple computers, which can be located in different places. This approach enhances efficiency and allows for faster processing of large amounts of data. In a distributed computing system, each computer, often referred to as a node, contributes its resources, such as processing power and storage. This collaboration can improve reliability, as the failure of one node does not disrupt the entire system. Examples of distributed computing include cloud computing and grid computing.