Overview
Docker Swarm is a container orchestration tool integrated directly into the Docker Engine. It enables users to create and manage a swarm of Docker Engines, effectively turning multiple Docker hosts into a single, virtual host. This facilitates the deployment, scaling, and management of containerized applications. Docker Swarm uses a declarative service model, allowing users to define the desired state of their applications, and the swarm manager automatically reconciles any differences between the actual state and the desired state. It features decentralized design, multi-host networking, service discovery, and load balancing. Designed for users intending to use Swarm as a production runtime environment, it simplifies cluster management without requiring additional orchestration software. Current versions of Docker include Swarm mode for natively managing a cluster of Docker Engines called a swarm.