Professional services firm EY on July 29, 2026 announced it is bringing an on-site quantum computer into its own network, an unusually large in-house step for a Big Four firm and part of a broader global investment of more than $3 billion in AI and other next-frontier technologies.
EY Canada as the innovation hub
The system will be led by EY Canada and used to run sensitive workloads for clients across optimization, fraud detection, data protection and large-scale risk management. Owning the hardware in-house, EY said, will let the firm meet regulatory, security and privacy requirements that cloud-based quantum access often cannot, while accelerating internal validation of quantum-enabled applications.
"AI may be the defining technology platform of this decade, and quantum will ultimately expand its horizons," said Raj Sharma, EY's Global Managing Partner for Growth & Innovation. Biren Agnihotri, EY Canada's chief technology officer, said the move "shifts the conversation on quantum computing from concept to practical use for clients across markets."
Attached to ey.ai and Client Zero
The quantum rollout is being pitched as the next chapter of ey.ai, the AI-led "Reimagination Engine" EY launched earlier this year to move enterprise clients past pilots. It also deepens the firm's "Client Zero" playbook, which uses EY itself as the first customer for new tools before external deployment. EY said the investment builds on a recent quantum patent and can be scaled through the EY global network from Canada into other key markets.
Enterprise quantum is getting real
EY's move lands in a market where enterprise buyers have started spending on quantum readiness even before general-purpose fault-tolerant machines exist. It follows recent activity such as AT&T's expanded D-Wave deal, Quantinuum's $1.68B IPO and a rising number of trapped-ion testbeds going into commercial hands.
Reporting based on coverage from EY's press office and The Quantum Insider.