Cluster systems are a type of computing architecture that connects multiple computers, or nodes, to work together as a single system. This setup allows for improved performance, reliability, and scalability, as tasks can be distributed among the nodes. If one node fails, others can take over its workload, ensuring continuous operation. These systems are commonly used in various fields, including scientific research, data analysis, and web hosting. By leveraging the combined power of multiple machines, cluster systems can handle large volumes of data and complex computations more efficiently than a single computer could manage alone.