Docker Swarm
Docker Swarm is a native clustering and orchestration tool for Docker containers, enabling the management of a cluster of Docker hosts as a single virtual system. It provides built-in features for service deployment, scaling, load balancing, and high availability, allowing developers to run distributed applications across multiple machines. As part of the Docker ecosystem, it simplifies container orchestration without requiring additional software installation.
Developers should learn Docker Swarm when they need a lightweight, easy-to-set-up orchestration solution for small to medium-scale containerized applications, especially if they are already using Docker and prefer a native tool. It is ideal for scenarios requiring simple service discovery, rolling updates, and basic load balancing, such as deploying microservices or web applications in on-premises or cloud environments. However, for large-scale, complex deployments, alternatives like Kubernetes might be more suitable.