OpenStack vs VMware: what actually changes

A practical comparison for teams weighing a move off vSphere: what OpenStack gives you, what it asks of you in return, and how edgeContinuum turns it into a self-service cloud instead of a second operations project.

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Open source foundation, hardware you already ownManaged Kubernetes, PostgreSQL and VMs in one consoleSubscription per managed resource, not per core or socket

Same hardware, different operating model

vSphere VMstoday

vCenteradmin console

Ticket queueto get a VM

OpenStackopen virtualization

Self-serviceconsole, API, Terraform

Managed servicesclusters and databases

One platform for both audiences: teams and clients

The comparison is not feature by feature

Most OpenStack vs VMware comparisons line up hypervisor features and stop there. In practice the two stacks differ in three things that matter more: who is allowed to provision, what the licence meter counts, and how much operations work the platform hands back to you. vSphere is a mature virtualization stack with an admin-centric console, licensed by CPU. OpenStack is an open, API-first cloud that gives you tenancy, quotas and programmable infrastructure, and asks for real operational skill in exchange. edgeContinuum exists to settle that last point: it manages the OpenStack layer for you and puts a self-service cloud on top, so the move buys you the open foundation without buying a platform project. The full picture of what that adds is on the OpenStack management platform page.

What each piece of your vSphere estate becomes

ESXi hosts and clusters

OpenStack compute on the same serversYour hardware keeps working. OpenStack becomes the virtualization layer, and edgeContinuum drives it back to its desired state instead of asking your team to operate it by hand.

vCenter as the admin console

A self-service console, API and Terraform providerDevelopers and client teams provision inside guardrails you set, so infrastructure requests stop arriving as tickets.

VM templates and folders

Image and flavor catalogs plus an app marketplaceGolden images stay a catalog choice; Helm charts, containers and your own internal apps become one-click products for every project.

Kubernetes bolted on beside the hypervisor

Managed CNCF-conformant clustersClusters, node pools, upgrades, autoscaling and healing are the platform’s job, on the same infrastructure as your VMs.

Per-CPU licensing and bundles

A subscription per managed resourceClusters, databases and VMs are the unit, independent of cores, sockets and users, and the same in SaaS or fully air-gapped.

Operability

The honest gap, closed

The real objection to OpenStack is not capability, it is day two: keeping the control services healthy, upgrading them, and giving users something friendlier than raw APIs. edgeContinuum manages that layer. Declarative desired state (Cluster API, Crossplane) drives the infrastructure continuously, so upgrades, scaling and recovery are automated, and every resource is one console away.

Automated upgradesSelf-healingNo configuration driftOne console

ResourceTypeHealthVersion

prod-eu-westClusterHealthyv1.34.0

analytics-dbPostgreSQLHealthy16.10

web-frontendVMOnubuntu-24.04

Desired state reconciledUpgrades in place

What you gain

Tenancy, services and sovereignty

Moving to open infrastructure is worth more when the platform on top gives you things vSphere never sold you: structural multi-tenancy with usage tracked per tenant, managed databases, and a deployment model that reaches from hosted SaaS to a fully air-gapped site without changing product.

Organizations and quotasManaged PostgreSQLAir-gap capableEU-built

Multi-tenancy

Organizations, projects, roles and quotas enforced by IAM.

Managed PostgreSQL

Provisioned, highly available, lifecycle handled.

Regions and zones

Several infrastructures shaped into one platform.

Sovereignty

Your perimeter, your data, EU-built and supported.

Frequently asked questions

Is OpenStack really production ready?

Yes, and it has been for years: it runs public clouds, telco networks and research infrastructures at scale. The question worth asking is who operates it. With edgeContinuum the platform manages the OpenStack layer and exposes managed services on top, so your team consumes it instead of running it.

What happens to our existing VM images?

VM images import into OpenStack through standard tooling and then live in the platform catalog, with networks, routers and firewall rules managed from the same console as your clusters. Our engineers work the plan with you.

Do we lose vSphere features we depend on?

Some things have different names and different shapes: OpenStack has its own model for networking, volumes and availability. In our experience the workloads move, and the operating model changes more than the capability list. A short discovery call is the fastest way to check your specific dependencies.

Can we run both stacks during a transition?

Yes. edgeContinuum connects to the OpenStack you stand up and manages that side, while your remaining vSphere estate keeps running as-is. Sites and infrastructures are shaped into platform regions and zones, so you can move workload by workload.

How is this priced compared with a vSphere renewal?

A subscription per resource managed through the platform (clusters, databases, VMs), independent of cores, sockets or users. Denser hardware improves your unit economics instead of raising the bill.

Keep exploring

VMware alternative OpenStack management platform Kubernetes on OpenStack Product tour

Compare it against your own estate

Book a call and we’ll walk your vSphere inventory through the ladder above, or request a free trial and provision managed services on a lab OpenStack in minutes.

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