What Is Docker Swarm and How Does It Work?

Docker Swarm is one of those tools that quietly keeps shipping production workloads while the internet argues about what’s “dead.” If you’re already running Docker containers and you want a step up from relying on one box and some scripts, Swarm mode can feel like the most straightforward path: one or more nodes become a swarm, you deploy services, and the platform keeps replicas alive when a…