# Fourth Cloud — On-prem control plane assessment

> https://fourthcloud-23ae5.web.app

Function-by-function scoring of on-prem control planes against the Fourth Cloud operational model. The instrument identifies gaps; it does not rank vendors.


## Site navigation

| Path | Page |
|---|---|
| / | Landing |
| /what-is-fourth-cloud | Framework explainer |
| /methodology | How to read the scores |
| /compare | Cross-vendor comparison |
| /enterprise-buyers | For enterprise buyers |
| /technology-vendors | For technology vendors |
| /assessment/vmware-vcf-fourthcloud | VMware Cloud Foundation (VCF) assessment |
| /assessment/redhat-openshift-fourthcloud | Red Hat OpenShift assessment |
| /assessment/nutanix-fourthcloud | Nutanix Cloud Platform assessment |
| /assessment/oxide-fourthcloud | Oxide Computer assessment |

## Plain-text mirrors

- https://fourthcloud-23ae5.web.app/llms.txt — this file (navigation index)
- https://fourthcloud-23ae5.web.app/llms-full.txt — complete dataset
- https://fourthcloud-23ae5.web.app/assessment/vmware-vcf-fourthcloud.md — VMware Cloud Foundation (VCF)
- https://fourthcloud-23ae5.web.app/assessment/redhat-openshift-fourthcloud.md — Red Hat OpenShift
- https://fourthcloud-23ae5.web.app/assessment/nutanix-fourthcloud.md — Nutanix Cloud Platform
- https://fourthcloud-23ae5.web.app/assessment/oxide-fourthcloud.md — Oxide Computer

## Assessed vendors


### VMware Cloud Foundation (VCF)
- Status: **complete** · Version: v2.4 · Date: May 29, 2026
- Fourth Cloud Control Plane Assessment — Substrate-Agnostic
- Identity plane continuity: siloed (score 1)
- VMware Cloud Foundation is the most operationally mature Fourth Cloud control plane for on-prem environments. The v2.2 assessment incorporates three model comparisons and a product documentation pressure test that materially changed several scores. The core finding is unchanged: VCF is strongest at FC-2A and FC-2B, weakest at FC-1 and FC-4, and absent at FC-2C.

**Layer status:**
- FC-0 (Physical & Virtual Substrate): Strong (avg 3.00)
- FC-1 (Distributed Data & Context Fabric): Gap (avg 1.75)
- FC-2A (Infrastructure Orchestration): Moderate (avg 2.80)
- FC-2B (Execution & Runtime): Moderate (avg 2.75)
- FC-2C (The Reasoning Plane): Absent (avg 0.00)
- FC-3 (Application Distribution and Governance): Moderate (avg 2.75)
- FC-4 (Integration Fabric): Absent (avg 0.40)

**DAPM profile:** Retained 8 · Delegated 1 · Ceded 17


### Red Hat OpenShift
- Status: **complete** · Version: v2.4 · Date: May 29, 2026
- Fourth Cloud Control Plane Assessment — Red Hat Vendor Boundary
- Identity plane continuity: federated (score 3)
- Red Hat OpenShift's strongest Fourth Cloud characteristics are at FC-3 and FC-4, anchored by an included federated identity plane that spans orchestration through integration. OperatorHub's operator model — encoding Day 2 operational intelligence in the operator rather than requiring the enterprise to build operational knowledge — is a genuine platform capability included in the base subscription. The Keycloak identity federation plane spanning FC-2A through FC-4 is an included architectural advantage that eliminates the enterprise's need to build cross-layer identity bridges for primary orchestration, execution, application distribution, and integration functions.

**Layer status:**
- FC-0 (Physical & Virtual Substrate): Moderate (avg 2.33)
- FC-1 (Distributed Data & Context Fabric): Moderate (avg 2.25)
- FC-2A (Infrastructure Orchestration): Moderate (avg 2.80)
- FC-2B (Execution & Runtime): Strong (avg 3.00)
- FC-2C (The Reasoning Plane): Absent (avg 0.00)
- FC-3 (Application Distribution and Governance): Strong (avg 3.00)
- FC-4 (Integration Fabric): Moderate (avg 2.60)

**DAPM profile:** Retained 14 · Delegated 6 · Ceded 6


### Nutanix Cloud Platform
- Status: **complete** · Version: v1.2 · Date: May 29, 2026
- Fourth Cloud Control Plane Assessment — Nutanix Vendor Boundary
- Identity plane continuity: partial (score 2)
- Nutanix Cloud Platform is the most architecturally complete on-premises control plane in the instrument that is neither a pure IaaS substrate (Oxide) nor a developer-platform-first stack (OpenShift). Its defining strength is the unified management plane across VMs, Kubernetes, databases, AI inference, and cloud burst through a single Prism Central surface — the broadest workload management coverage of any HCI platform assessed. NC2 on AWS, Azure, and GCP with the same Prism Central management plane is Nutanix's strongest FC-0 differentiator: the only on-premises vendor providing genuine same-control-plane cloud portability through its base product.

**Layer status:**
- FC-0 (Physical & Virtual Substrate): Moderate (avg 2.67)
- FC-1 (Distributed Data & Context Fabric): Gap (avg 1.75)
- FC-2A (Infrastructure Orchestration): Moderate (avg 2.60)
- FC-2B (Execution & Runtime): Strong (avg 3.00)
- FC-2C (The Reasoning Plane): Absent (avg 0.00)
- FC-3 (Application Distribution and Governance): Moderate (avg 2.75)
- FC-4 (Integration Fabric): Absent (avg 0.60)

**DAPM profile:** Retained 9 · Delegated 1 · Ceded 16


### Oxide Computer
- Status: **complete** · Version: v1.2 · Date: May 29, 2026
- Fourth Cloud Control Plane Assessment — Rack-Scale IaaS
- Identity plane continuity: partial (score 2)
- Oxide Computer is the most important finding in this instrument for what it reveals about the Fourth Cloud stack structure: Oxide is the IaaS layer on which a Fourth Cloud control plane runs, not a Fourth Cloud control plane itself. Every other vendor assessed — OpenShift, VCF, Dell DCAP — is a software control plane that runs on commodity OEM hardware. Oxide inverts this: it is purpose-built hardware with an integrated software control plane that provides VM provisioning, elastic block storage, VPC networking, and hardware lifecycle management as one product. The correct comparison for Oxide is AWS EC2, Azure Virtual Machines, or GCP Compute Engine — not OpenShift or VCF.

**Layer status:**
- FC-0 (Physical & Virtual Substrate): Gap (avg 1.33)
- FC-1 (Distributed Data & Context Fabric): Absent (avg 0.25)
- FC-2A (Infrastructure Orchestration): Gap (avg 1.60)
- FC-2B (Execution & Runtime): Gap (avg 1.25)
- FC-2C (The Reasoning Plane): Absent (avg 0.00)
- FC-3 (Application Distribution and Governance): Gap (avg 1.00)
- FC-4 (Integration Fabric): Absent (avg 0.00)

**DAPM profile:** Retained 22 · Delegated 0 · Ceded 4