Tesco migrates 40,000 VMware workloads after Broadcom's abusive price hike

What happened?

Tesco, the British retail giant, is undertaking one of the largest infrastructure migrations ever documented: moving 40,000 server workloads off VMware in response to what it calls "abusive conduct" by Broadcom, according to legal documents filed in the UK High Court. The lawsuit, initially reported by The Register in September 2025, alleges that in January 2021 Tesco acquired perpetual licenses for VMware vSphere Foundation and Cloud Foundation, a subscription to VMware Tanzu, and support services through 2026, with an option to extend for four more years. However, after Broadcom acquired VMware in November 2023 for $61 billion, Broadcom refused to honor the existing agreement and attempted to impose "excessive and inflated" prices for virtualization software that Tesco had already paid for. Additionally, Broadcom allegedly prevented Tesco from purchasing support services for its perpetually licensed software without acquiring duplicate subscription-based licenses for the same products.

Tesco's lawsuit is not an isolated case. Since Broadcom completed the acquisition, it has implemented drastic changes to licensing models, eliminating perpetual licenses and forcing customers into subscriptions, resulting in cost increases of up to 5-10 times for some clients. According to Gartner analysts, the total cost of ownership (TCO) of VMware has skyrocketed, making migration economically viable even considering transition costs. Tesco's action could set an important legal precedent and accelerate the trend of companies abandoning VMware.

Why is this important?

This case is significant not only because of the scale of the migration (40,000 workloads) but also because it involves one of the world's largest retailers with annual revenues exceeding £60 billion. Tesco's decision to publicly litigate against Broadcom sends a clear signal to the market: companies are not willing to passively accept price increases and unilateral contract changes. The lawsuit alleges that Broadcom engaged in "abusive conduct" by failing to comply with existing contractual terms, which could open the door to class action lawsuits by other affected customers.

Since the acquisition, Broadcom has faced widespread criticism for its short-term revenue maximization strategy. According to an IDC report, 30% of VMware enterprise customers have already begun evaluating alternatives, and 15% are expected to fully migrate within the next two years. Tesco's migration, which could be completed in 18-24 months, serves as a case study for other companies facing similar decisions. Moreover, the lawsuit could force Broadcom to reconsider its pricing policies or face further legal action, impacting its subscription-based business model.

Market consequences

Tesco's migration could accelerate the trend of companies abandoning VMware in favor of alternatives like Nutanix, Microsoft Hyper-V/Azure Stack HCI, or open source solutions such as Proxmox and oVirt. According to Forrester analysts, VMware's TCO has increased between 300% and 500% for customers renewing contracts under Broadcom's new conditions. This makes even migration costs (which can be 20-30% of annual TCO) affordable within a 2-3 year horizon.

Large companies like AT&T and Walmart have also initiated massive migrations from VMware, though none have reached Tesco's scale. AT&T, for example, announced in 2025 that it would migrate 30,000 workloads to its own OpenStack-based cloud. Walmart, meanwhile, has opted for a combination of Azure Stack HCI and Nutanix. These migrations reflect a structural shift in the virtualization market, where Broadcom is losing share to more agile competitors with predictable pricing models.

For current VMware customers, this case is a signal to evaluate their contracts and prepare contingency plans. According to legal experts consulted by Ars Technica, support renewal clauses in perpetual contracts can be a critical point. Many contracts allow providers to change support terms but not eliminate the right to use perpetually acquired software. Tesco's lawsuit could clarify these legal boundaries.

Additionally, Tesco's migration will have a significant impact on its own operations. With 40,000 workloads, the company will likely need to redesign its IT architecture, train staff, and manage disruption risks. However, the potential savings are enormous: if Tesco can reduce its virtualization costs by 50%, it could save tens of millions of pounds annually.

What should readers know?

• Contract review: Companies still using VMware should review their perpetual license contracts and support renewal clauses. Special attention should be paid to whether the contract allows the provider to unilaterally change support terms. Tesco's lawsuit could set a precedent in the UK.
• Viable alternatives: Nutanix, Microsoft Hyper-V/Azure Stack HCI, and open source solutions like Proxmox are mature alternatives. Nutanix, for example, reported a 40% increase in new customers coming from VMware in 2025. Proxmox, while less enterprise-grade, offers a low-cost option for non-critical workloads.
• Migration costs: Migration can be complex and costly, but potential savings are significant. According to a McKinsey study, the return on investment for migrating from VMware to alternatives can be less than 18 months if licensing costs have doubled or tripled.
• Legal context: Tesco's case could take years to resolve. Meanwhile, Broadcom continues to apply its new policies. Companies should not wait for the case to be resolved before acting; they should start planning their migrations now.
• Previous examples: Other large companies like AT&T and Walmart have already initiated massive migrations. AT&T migrated 30,000 workloads to OpenStack, while Walmart opted for a combination of Azure Stack HCI and Nutanix. These cases demonstrate that migration is feasible even at scale.

"Tesco is moving 40,000 workloads off VMware, one of the largest migrations ever documented, in response to what it calls 'abusive conduct' by Broadcom. This case could be a turning point in the virtualization industry, forcing Broadcom to reconsider its policies or face a mass exodus of customers."

In summary, Tesco's action is a milestone reflecting widespread discontent with Broadcom's policies. Companies should take note and prepare for a post-VMware future by diversifying their suppliers and ensuring their contracts protect them against unilateral changes. Hybrid cloud and open source solutions are gaining ground, and Tesco's migration could be the catalyst that accelerates this trend.