EY and Microsoft are putting more than $1 billion into a joint push to bring artificial intelligence deeper into corporate operations. The investment, announced this week, targets what the two firms describe as a broad acceleration of AI across key enterprise sectors — from finance and supply chains to compliance and customer service.
The scope of the investment
The money will fund new AI tools, training programs, and integration work inside EY's own service lines and for clients using Microsoft's Azure cloud and AI platforms. Executives at both companies said the goal is to make AI a standard part of how businesses run, not just an experimental add-on. The partnership builds on a relationship that already saw EY adopt Microsoft's AI tools internally.
Productivity and role transformation
According to the firms, the investment is expected to boost productivity and change the nature of many jobs — but not cut them. They stressed that the aim is to transform roles rather than shrink headcount. EY, one of the Big Four professional services firms, employs hundreds of thousands of people globally and has been testing AI in audit, tax, and consulting work for years. Microsoft, meanwhile, has been embedding its Copilot AI assistant into Office and business software.
For companies using EY's services, the partnership means access to custom-built AI models trained on industry data. The tools are designed to handle repetitive tasks, flag anomalies, and generate reports faster. EY plans to roll out the new capabilities across its global network over the next 12 to 18 months. Microsoft will provide the underlying cloud infrastructure and security layers.
The deal is one of the largest single investments in AI consulting and deployment between a tech giant and a professional services firm. It signals that even as companies cut costs in other areas, spending on AI remains a priority.
