Compatibility matrix

Which features work on which providers, at a glance. A partial-support mark means the feature works but its configuration differs per provider (for example, Kubernetes uses annotations for comma/colon values, and Proxmox LXC uses tags). Open the feature page for the specifics.

Feature	Docker	Docker Swarm	Kubernetes	Podman	Proxmox LXC	Systemd
Anti-affinity	✓	✓	≈	✓	✕	—
Instance Groups	✓	✓	≈	✓	≈	—
Keep instances warm on a schedule	✓	✓	≈	✓	✕	—
Mark instances as optional (best-effort)	✓	✓	✓	✓	✓	—
Delay readiness	✓	✓	✓	✓	✕	—
Mark ready on start	✓	✓	✓	✓	✕	—
Scale block I/O	✓	✕	✕	✕	✕	✓
Scale CPU	≈	≈	≈	≈	✕	≈
Scale memory	≈	≈	≈	≈	✕	≈
Scale instead of stop	≈	≈	≈	≈	✕	≈

✓ supported ≈ works, provider-specific details ✕ not yet (click a badge on the feature page to request) ✕ not possible

API Versioning