VMware Licensing Changed: Should We Move to Proxmox?

Short answer: Do not migrate just because the license bill went up. Four things decide it: which VMware components beyond virtualization you depend on, your team's operational maturity, your application vendors' support matrix, and the real total cost of the move. Migrate without measuring those four, and you will pay back the money you thought you saved in downtime.

Since Broadcom changed the licensing model after the acquisition, this has become the question we discuss most often in the field. IT managers who see the renewal quote usually ask the same thing: "Should we move to Proxmox?"

The question is legitimate. But the decision itself involves a much wider calculation than the license bill.

What the numbers say

A CloudBolt survey of 302 IT decision-makers in North America, published in February 2026, sums up the picture in three figures:

86% are actively shrinking their VMware footprint.Only 4% have completed a full exit.Just over half are running partial, phased transitions.

So almost everyone is moving and almost nobody has left. What is happening is less an exodus than a reduction of dependency, customer by customer and workload by workload.

On cost, expectation and reality have also diverged. In 2024, 73% of respondents expected their bill to more than double; the most common actual increase landed in the 25% to 49% band, with only 14% seeing rises above 100%. Even so, 85% expect further increases. More than today's invoice, that expectation is what is pulling new workloads away from the platform.

The most expensive number in the same survey is the one least discussed: roughly two-thirds of organizations have changed strategy at least twice since the acquisition. Every reversal wastes months, and indecision is a cost line of its own.

Ask the right question first

Before asking whether to leave VMware, ask: Which part of VMware am I using?

For an organization using only ESXi and vCenter, meaning running and managing virtual machines, the alternatives are genuinely mature. Proxmox VE is KVM-based and has been running in production for years.

But if NSX is in the picture, if vSAN is, if disaster recovery is orchestrated with SRM, if virtual desktops are delivered with Horizon, each of those is a separate migration project. Together they add up to a rebuild of the data center architecture rather than a "virtualization platform change."

That distinction shows up on the licensing side too: perpetual licenses are gone, the catalog collapsed into a few bundles around VMware Cloud Foundation, and pricing moved to a per-core metric with a minimum of 16 cores per socket. Components you do not use now arrive inside the same bundle.

The most expensive mistake we see is deciding on the ESXi cost alone and only asking months later what will replace vSAN.

The four criteria

Dependency inventory. Which VMware products, which versions, which integrations. Your backup software, monitoring system and automation tooling belong on that list too; most depend on VMware APIs and may not offer the same capabilities on an alternative platform. In a Veeam architecture, this directly affects proxy and transport mode choices.

Team maturity. Proxmox and KVM feel natural to a team comfortable with Linux. For a team that has never gone beyond the vCenter interface, the learning curve is real, and it shows up later, in a midnight incident six months after the migration.

Vendor support matrix. Which hypervisor does your ERP, your database vendor or your industry-specific application support? Some enterprise applications only offer certified support on particular platforms. Accepting the loss of support is a decision; losing it without noticing is an accident.

Real total cost. The license difference is only one line. Migration labor, duplicate hardware during the parallel-run period, reconfiguring backup software, team training and the risk premium during the move all belong in the calculation. A comparison made without a three-year total makes the savings look larger than they are.

For a sense of timing: Danish manufacturer Danfoss is moving roughly 1,100 servers off VMware, with the project planned from spring 2025 to the end of 2027. That is two and a half years. A serious hypervisor migration takes more than a weekend with a disk converter.

Eclit's view

The virtualization layer has stopped being a competitive advantage and become a commodity. Ten years ago the choice of hypervisor was a strategic decision; today ESXi and KVM do the same job, and the difference is in the operation you build on top.

So our approach is this: do not rush, but prepare.

Do not rush, because the cost of leaving a working platform is usually higher than the license cost difference for a single term. The renewal window may be creating pressure; architectural decisions made under that pressure determine the next three years.

Prepare, because dependence on a single platform is itself a risk. Today it is the licensing model that changed; tomorrow it could be the support policy. Building new workloads to be platform-independent, running test and development environments on an alternative platform, and building the team's KVM skills can all happen before you decide to migrate, and they make the decision cheaper when it comes.

A phased migration almost always produces a better result than a single cutover. Non-critical workloads first, then the second tier, core systems last. A way back stays open at every stage. Writing the rollback plan for each wave is what separates a migration from an incident; the logic is the same as in the disaster recovery failover test guide.

If the decision is being forced on you

If you are facing a renewal quote with time running short, the most sensible short-term move is usually to renew for this term, try to keep the contract short, and use that time to build the dependency inventory, so you go into the next decision prepared.

In practice, the decision is made 12 to 18 months before the renewal quote arrives; that is how long it takes to get a real alternative on the table.

Architectural decisions made under pressure stay with you after the pressure passes.

Sources

CloudBolt survey, February 2026: 302 IT decision-makers; footprint reduction, full exit and cost increase ratesHow we build this layer: cloud platforms

The assessments in this article are general. Before deciding for your own environment, we recommend producing your dependency inventory and confirming your vendor support matrices.