Tesco Abandons VMware: The Largest Public Broadcom Defection Case So Far

Tesco, one of the largest retail chains in the United Kingdom (revenue of £73.7 billion in fiscal year 2026, around US$98.7 billion), confirmed in recent court documents that it is migrating approximately 40,000 server workloads away from VMware. The move takes place in parallel with a legal dispute against Broadcom, the current owner of VMware, and is today one of the largest public cases of documented migration since Broadcom acquired VMware in November 2023.

For those working with infrastructure, virtualization, and corporate licensing contracts — as Nyverra does daily with clients — the Tesco case serves as a practical study of something many MSPs and IT teams have felt firsthand since Broadcom's model change: what happens when the terms you signed are no longer the terms you have.

The origin of the contract

The conflict stems from a contract signed in January 2021, when Tesco acquired:

• Perpetual licenses for VMware vSphere Foundation and Cloud Foundation products;

• Subscription to the VMware Tanzu platform;

• Support services and software updates valid until 2026, with option to extend for four more years.

Computacenter acted as the reseller for the deal, with Dell as the distributor of VMware products. In addition to virtualization, Tesco is also a customer of Broadcom mainframe software, used in critical processes such as product ordering for stores and payroll processing.

The turn after the Broadcom acquisition

When Broadcom took control of VMware, the retailer alleges that the company did not honor the contracted terms. According to Tesco's initial complaint, Broadcom allegedly tried to force "excessive and inflated" prices for virtualization software that Tesco had already paid for, and refused to sell support services for the perpetual licenses unless the company also purchased duplicate subscription licenses for the same products.

In practice, Broadcom stopped offering standalone support for customers who did not migrate to the company's subscription bundles — and, according to Tesco, this included refusal to provide all security updates to customers without an active subscription.

In January 2026, Broadcom effectively cut off support for Tesco's VMware environment. Since then, the retailer has been paying for third-party support to keep the environment operational while carrying out the migration.

The lawsuit and the numbers in dispute

Tesco filed a lawsuit in the UK High Court in mid-2025, accusing Broadcom of breach of contract and anticompetitive conduct, and is seeking more than £100 million in damages.

Court documents reveal that Broadcom presented at least four proposals to Tesco over time:

1. A "strategic proposal" sent in July 2024, covering virtualization and mainframe;

2. A proposal on January 9, 2026, with separate terms for VMware and mainframe — the first time Broadcom segmented the offers. Tesco alleges it had difficulty evaluating it, as it arrived only 19 days before the expiration of the current contracts;

3. and 4. Two additional proposals in April 2026, one of them valued at US$23.5 million (about £17.4 million) for a single year of VMware Cloud Foundation 9.0 combined with mainframe software and support.

According to Tesco, that amount would represent an increase of approximately 175% over what the company believes it has the right to pay under the original 2021 contract for VMware products, and a jump of 350% for mainframe products and services. The retailer described the adjustments as "manifestly unfair and excessive."

Broadcom, in its defense, rejects this characterization and argues that, now that Tesco has found market alternatives, it will be harder for the retailer to prove financial losses eligible for damages.

"Abusive conduct": the accelerated migration

The most cited excerpt from the court documents sums up the tone of the dispute:

"Faced with Broadcom's abusive conduct, and given the criticality of virtualization and mainframe software to the business, Tesco was forced to incur material costs to contract alternative solutions with reduced functionality, and to migrate to that software in a format, and on a timeline, that creates very significant risks for the business."

Tesco states that it intends to complete its exit from VMware by the end of 2027, calling that deadline the "fastest possible" and acknowledging that it will require work at an exceptional pace. Among the extraordinary costs cited are payments to third-party support providers to keep the VMware environment running after Broadcom suspended direct support.

A relevant technical detail for any infrastructure team: the virtualization solution chosen by Tesco to replace VMware is not compatible with Veeam and Zerto, tools the retailer used for backup, recovery, replication, and business continuity. This means that, in addition to migrating the hypervisor, Tesco also needs to rethink the entire data protection layer — a cascading effect common in forced migrations that many companies underestimate in initial planning.

Tesco is not alone

Tesco's lawsuit joins a growing list of disputes between corporate customers and Broadcom since the change in VMware's licensing model. Notable cases include:

• AT&T, which reached a confidential settlement with Broadcom;

• Siemens, whose litigation is still ongoing;

• Western Union, GEICO, and Computershare, cited as companies moving away from VMware;

• Even long-time VMware partners, such as Rackspace, are reportedly reducing their use of the company's solutions.

The movement is not restricted to large corporations. An example outside the traditional enterprise environment: the Belgian secondary technical institute Scheppers Instituut Wetteren migrated to local provider Whitesky.Cloud to avoid a 400% increase in licensing costs, making the switch without needing to purchase new hardware.

On Broadcom's side, executives have publicly stated that the company has strong resistance to offering extended support for legacy products sold under perpetual licenses, preferring to migrate all customers to VMware Cloud Foundation (VCF) — arguing that the bundle pays for itself quickly through operational efficiency gains. Seizing the moment, HPE recently announced an offer of one free year of license for its alternative Morpheus VM Essentials, plus a symbolic US$1 license for the Zerto migration software — a move clearly aimed at customers dissatisfied with Broadcom.

When the court will hear the case

The hearing in the UK High Court is scheduled for a window between November 1, 2027 and February 25, 2028 — not meaning the trial will occupy that entire period, but indicating the court's first availability to hear the case. In other words, Tesco will have completed (or be completing) its migration well before any judicial decision.

What this case teaches about vendor risk

From the perspective of those who design and sustain critical infrastructure for companies — whether in virtualization, backup, monitoring, or ITSM — the Tesco/Broadcom case reinforces points that apply to businesses of any size, not just retail giants:

• Perpetual license is not a guarantee of perpetual support. Changes in corporate control can unilaterally change the rules of the game, even with a contract in force.

• Forced migration costs more than planned migration. Tesco is absorbing extra costs for third-party support, loss of functionality, and tight deadlines — exactly the risks that continuity planning tries to avoid.

• The backup/DR layer is part of the hypervisor decision, not a later detail. The incompatibility between Tesco's new virtualization platform and its Veeam/Zerto tools shows how the hypervisor choice drags the entire data protection stack along with it.

• Diversification and portability reduce the vendor's bargaining power. Companies locked into a single virtualization ecosystem are more vulnerable to abrupt licensing adjustments — an argument in favor of architectures based on open platforms, such as Proxmox and oVirt/OLVM, which have been gaining ground precisely in this scenario of post-VMware acquisition uncertainty.

The outcome of the lawsuit will still take years to be decided, but the practical effect is already underway: the Tesco case increases pressure on Broadcom's commercial strategy for VMware and serves as a warning for any company that depends on long-term licensing contracts with suppliers that can be acquired — and have their rules rewritten — overnight.

Sources: Cyber Security Brazil and Ars Technica (via The Register, Slashdot, SDxCentral, TechRadar, and Tom's Hardware).

Published by Nyverra Tecnologia — nyverra.com.br