etcd

etcd is a distributed reliable key-value store that simplifies the coordination and management of critical data in distributed systems. It is primarily used to store configuration data, state information, and service discovery details, ensuring high availability and consistency. Built with strong consistency guarantees using the Raft consensus algorithm, etcd is a foundational component for Kubernetes and many other cloud-native applications. It provides a robust and resilient backend for complex architectures, making distributed systems easier to build and operate.