From AI pilots to enterprise impact: Why execution is the new differentiator

As the pace of change accelerates, organizations are moving quickly from AI experimentation to enterprise-scale transformation. Leaders are prioritizing measurable outcomes, faster time to value and repeatability across the business.

But many are encountering the same reality: the challenge is no longer deciding whether to invest in AI — it’s scaling adoption and delivering consistent, enterprise-wide impact.

Over the past year, one thing has become clear. Organizations aren’t asking if AI matters. They’re asking how to make it real — how to embed it into the way work gets done and ensure it drives meaningful results.

That’s where many are getting stuck.

Because the barrier is no longer experimentation. It’s execution.

Intelligence and trust as the foundation

At Microsoft, we believe successful AI Transformation depends on two foundational elements: intelligence and trust.

Organizations need to harness their own work intelligence — the data, workflows and expertise that make their business unique — and apply it through AI in ways that are flexible, secure and governed. That requires a platform that supports model diversity and continuous innovation, without compromising enterprise-grade security, compliance and reliability.

Just as importantly, AI must be embedded into the flow of work — how people collaborate, make decisions and operate day to day. For that to scale, systems must be transparent, secure and accountable.

This is where real enterprise value is created — and where many organizations need a clearer path forward.

Achieving impact at scale requires more than deploying new tools. It requires a trusted foundation — integrating data, security, privacy and governance — and a new model for delivering AI into the business.

That’s why Microsoft and EY are deepening our alliance — to help organizations move faster from AI ambition to measurable business outcomes.

From pilots to production

There is no shortage of AI pilots in today’s market. But pilots don’t transform businesses. What organizations need now is the ability to scale AI across the enterprise, integrate it into core workflows and deliver sustained, repeatable impact.

EY brings that experience.

As one of the first global organizations to deploy Microsoft 365 Copilot at scale, EY began with an initial rollout to 150,000 of its people, quickly demonstrating what’s possible when AI is embedded into everyday work.

The results were significant and measurable:

• A 15% productivity gain, reinvested into client delivery and continuous learning
• 94% monthly adoption and 85% weekly usage
• 63% of enabled employees using Copilot three or more days per week
• 81% of employees reporting time savings, with 84% redirecting that time to higher-value work and 73% improving quality of output

The impact goes beyond individual productivity into agentic AI in core business operations:

• Finance operations modernized with intelligent agents, driving 95% faster lead times and more than 37% reduction in operational costs
• A multi-agent AI framework was deployed across 130,000 Assurance professionals and 160,000 audit engagements
• Tax workflows were transformed through document automation, reducing manual effort by up to 90%

With these results, EY is now expanding Copilot through Microsoft 365 E7 to more than 400,000 of its people worldwide, moving from early success to true enterprise scale.

This is what enterprise-scale transformation looks like — not isolated wins, but sustained impact across the organization.

It’s also why EY serves as Customer Zero — applying Microsoft AI technologies internally to prove what works before bringing those solutions to clients.

Investing in what actually drives outcomes

Building on this foundation, Microsoft and EY are jointly investing more than $1 billion in a new initiative designed to help organizations move from isolated AI use cases to enterprise-scale transformation.

This effort brings together Microsoft’s AI platforms, including Azure, Microsoft 365 Copilot, Foundry, Fabric and security — and EY’s deep industry capabilities and transformation leadership.

But what differentiates this initiative isn’t just what we bring. It’s how we deliver it.

At its core is a shared focus on helping organizations become Frontier Firms — where AI is embedded across the enterprise, not layered on top.

In a Frontier Firm, data, workflows and decision-making are connected end to end. AI becomes part of how work happens, and human expertise is amplified by intelligent systems.

Reaching this level requires more than investment. It requires execution.

A new model for execution at scale

This is where our approach is fundamentally different.

Microsoft and EY are cooperating as an integrated transformation engine — co-developing, co-engineering and co-delivering solutions aligned to real business priorities.

A key part of this model is Microsoft’s Forward Deployed Engineers (FDEs), who work side by side with EY transformation teams directly within customer environments.

Together, these teams:

• Co-create solutions grounded in business needs
• Accelerate deployment across complex systems
• Stay engaged from initial use case through full-scale adoption

This integrated model closes the gap between strategy and execution. It reduces friction across the technology stack and creates a direct path from pilot to production — at enterprise scale.
It also ensures that intelligence and trust advance together, embedding AI across data, applications and infrastructure in ways that can be governed, secured and continuously optimized.

Importantly, it establishes a repeatable blueprint — one that organizations can use to scale AI adoption across functions, industries and geographies.

Why this matters now

Organizations are under pressure to move faster — to go beyond experimentation and deliver AI across the enterprise.

What they need is not just technology, but a clear path to execution — grounded in both intelligence and trust.

AI is not simply about doing work faster. It’s about enabling people and organizations to do more — focusing on insight, creativity and higher-value decision-making.

Our work with EY demonstrates what’s possible when AI is deployed with purpose at scale. Together, we are bringing those learnings to customers around the world — helping them accelerate transformation, unlock efficiencies and create new opportunities for growth.

Microsoft and EY are committed to helping organizations turn AI ambition into enterprise impact.

Learn more in the official announcement.

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