Migrating from VMware to Open Source: Stakes, Benefits and Trade-offs

In 2026, the question is no longer technical. It is contractual and channel-related: a subscription-only model, six hosting providers retained in the VMware programme in France against twenty-two managed service providers removed, and a formal complaint now under examination in Brussels. Yet there is no mass exodus, and any document promising you an obvious exit is selling you an illusion.

This 48-page white paper examines three credible paths, Proxmox VE, Vates with XCP-ng, and KubeVirt platforms, through eight questions to measure on your own estate. It says what most comparisons leave out: the hard part is neither high availability nor networking, it is disaster recovery. And the real cost is not the licence, it is the skills.

81 verified sources, an explicit list of what we could not verify, and a one-sentence decision test. Public document, free to redistribute.

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