| Tenancy | Dedicated bare-metal, single-tenant | Dedicated bare-metal, single-tenant | Shared-pool or marketplace |
| Fabric | ≥ 3 Tbps/node disclosed (8-rail IB-NDR / EFAv2 / RoCE-v2 non-blocking) | ≥ 400 Gbps/node disclosed (IB-HDR / RoCE / sub-3 Tbps IB-NDR) | Ethernet, undisclosed, or sub-400 Gbps trivial RDMA |
| Bundle depth | Managed ops, tiered support, observability, egress allowance, compliance | Bundle varies — not gated; observed mix of basic to richer disclosures | Self-serve, no support tier |
| Typical operators | AWS · Azure · OCI · CoreWeave · Nebius | Crusoe · Denvr · Lambda Cluster · RunPod Cluster · RunPod Secure | Vast.ai · DigitalOcean · Hyperstack · Scaleway · DataCrunch · RunPod Community · Genesis Cloud · Massed Compute · TensorDock · Lambda OD |
| Use case | Production training, regulated workloads | Dedicated training, less ceremony | Cost-sensitive batch, dev/test, spot |