The phrase “build a private cloud” sounds like it should be straightforward in 2026. The reality: it’s an architecture problem, an operational discipline problem, and a team-capacity problem at the same time. Done well, it produces a platform that compounds value for years. Done badly, it produces operational debt and the next emergency.
Ænix builds private clouds end-to-end based on Cozystack, an open-source CNCF project that Ænix created and co-maintains, with deployments across hosting, regulated finance, telecom, AI and academia (see the case studies).
Pairs with: Ænix Private Cloud Platform for regulated enterprises building private/hybrid sovereign cloud; Public Cloud Platform for large operators needing multi-region public-cloud-class platform.
Who builds a private cloud successfully
The work fits when:
- You have or are building a platform engineering function (this is operational commitment, not a one-time project).
- You have a specific trigger — VMware exit, sovereignty mandate, AI workloads, FinOps cliff.
- The economics support dedicated infrastructure (sustained workloads, regulated data, or AI/GPU at scale).
- The customer team can sustain operations after Ænix leaves (or has chosen managed-services).
If you’re not sure on any of these, the assessment phase clarifies before building begins.
What a “build private cloud” engagement actually covers
- Hardware — sizing, vendor selection, datacenter / colocation arrangements.
- Platform layer — Cozystack on Talos (default), or extension of existing Kubernetes.
- Storage — LINSTOR/DRBD via Piraeus; capacity planning; backup architecture.
- Network — Cilium, BGP fabric, MetalLB, ingress.
- Multi-tenancy — Tenant CRD, RBAC, quotas, audit.
- Operations — observability stack, runbooks, on-call, incident response.
- Self-service — golden paths for product teams.
- Compliance — sovereignty, audit-readiness per applicable regulator.
- Knowledge transfer — your platform team operates it after handover.
Engagement structure
| Phase | Duration | Output |
|---|---|---|
| Discovery | 30 min, free | Confirm fit |
| Assessment | 14 or 28 days | Architecture, sizing, Phase 2 plan |
| Build | 3-12 months | Production private cloud |
| Operate (optional) | Ongoing | Managed service or in-house |
For methodology see Platform Readiness Assessment.
Why Ænix
- The cloud is yours, not ours. The foundation is Apache 2.0 with no per-core licensing, and the handover is a deliverable with named in-house owners, not a hope.
- We created the foundation. Ænix created Cozystack and co-maintains it; it has deployments across hosting, regulated finance, telecom, AI and academia.
How to start
- Build private cloud — 90-day playbook
- Private cloud consulting — broader scope
- Cloud repatriation — when leaving public cloud
- Cozystack
Ænix created Cozystack, a CNCF project and CNCF Certified Kubernetes distribution, and maintains it with maintainers from other companies. Ænix sells three platforms built on it — Public Cloud, Private Cloud and AI — plus support and services.