Kubernetes vs Docker Swarm vs Nomad: Container Orchestration Showdown 2026

My team's internal tooling cluster hit a wall in late January. We had about 20 services running across two Docker hosts — managed manually with docker-compose and a lot of wishful thinking. One host was at 80% memory constantly. In December alone we had two separate incidents where someone (okay, me) accidentally stopped a critical service while trying to restart another. Time to actually fix this. The usual debate followed: Kubernetes, Docker Swarm, or Nomad? I'd used K8s at a previous job — a fintech with 500+ pods in production — so I knew what it could do. I also knew what it cost to operate. My current team is four engineers. We don't have a dedicated platform person. So the question wasn't just "what's most capable" — it was "what can we actually run without it becoming a second job?" I spent two weeks — end of January through mid-February 2026 — deploying the same reference workload to all three. Same apps, same node count (3 VMs on Hetzner, 4 vCPUs / 8GB RAM each), same basic r