Docker Swarm

ELI5 — The Vibe Check

Docker Swarm is Docker's built-in orchestration tool for running containers across multiple machines. It's like Kubernetes' simpler, less popular cousin who's perfectly fine for most parties but doesn't get invited to enterprise events. It uses the same Docker Compose files you already know, which is its superpower and also why it lost to Kubernetes.

Real Talk

Docker Swarm is Docker's native container orchestration platform that enables clustering multiple Docker hosts into a single virtual host. It provides service discovery, load balancing, rolling updates, and secret management using familiar Docker Compose syntax. While simpler than Kubernetes, it has less community adoption and fewer features.

When You'll Hear This

"Docker Swarm handles our 10-node cluster perfectly — we don't need Kubernetes complexity." / "Swarm uses the same compose files, so migrating from single-host to multi-host was painless."