| 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 |
| Operators at this grade | AWS · Azure · OCI · Nebius · CoreWeave (H100/H200/B200) · GCP (H200) | CoreWeave (A100) · GCP (H100) · Crusoe · Denvr · Genesis Cloud · DataCrunch · Hyperstack · Voltage Park · Lambda (cluster) · RunPod (cluster / secure) | CoreWeave (L40S) · Lambda (on-demand) · Vast.ai · DigitalOcean · Scaleway · RunPod (community) · Massed Compute · TensorDock |
| Use case | Production training, regulated workloads | Dedicated training, less ceremony | Cost-sensitive batch, dev/test, spot |