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Abstract visualization of multiple connected server nodes grouped together forming a cluster with connection lines in blue.

What Is a Cluster? Definition, How It Works, and Use Cases

A cluster is a group of interconnected computers (nodes) that work together as a single system for higher availability, performance, and scalability than one machine. This explainer covers how clusters work, the main types (high-availability, load-balancing, HPC, storage), quorum and fencing, use cases, and limits.

Jul 4, 202618 min readEmanuel De Almeida