# How EY uses GitHub Copilot

**2,000**: “EY has now rolled out GitHub Copilot to all its 2,000 developers.”

As published on [github.com](https://github.com/customer-stories/ey), February 2024. Captured by usedby on 2026-10-12.

- Company: [EY](https://www.usedby.ai/companies/ey.md)
- Tool: [GitHub Copilot](https://www.usedby.ai/tools/github-copilot.md)
- Industry: [Accounting & Audit](https://www.usedby.ai/companies/industry/accounting-audit.md)
- Teams: Developers

## What the story says

EY rolled out GitHub Copilot to all of its developers after a pilot, using the AI pair programmer in daily development workflows, including to generate code and help with tasks like writing unit tests. It also migrated repositories from Azure DevOps to GitHub Enterprise.

Summary written by usedby from the source page, in English. The figures are those of GitHub Copilot and EY, not ours.

> EY began using GitHub Copilot with a pilot program of around 150 developers. Within a matter of weeks, those developers had already committed 1.2 million lines of code generated by the AI pair programmer.

- **1.2 million**: “Within a matter of weeks, those developers had already committed 1.2 million lines of code generated by the AI pair programmer.”
- **150**: “EY began using GitHub Copilot with a pilot program of around 150 developers.”

> GitHub Copilot is turbocharging developer workflows.
>
> Mark Luquire, director and global head of platform adoption

Source: [github.com](https://github.com/customer-stories/ey), captured 2026-10-12.

## What usedby checked

We compared the story with its live page on 2026-10-12.

- Checked: the figure 2,000 is printed word for word on the page, near the name of EY.
- Checked: the passage quoted above is copied word for word from the page, near the name of EY.
- Checked: the publication date is read from the page’s own metadata, never guessed.
- Checked: EY uses GitHub Copilot. Confirmed line. Latest check across sources: 2026-10-12.
- Not checked: the result itself. We quote it; we did not measure it.

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Source: https://www.usedby.ai/case-studies/ey-github-copilot · How we check: https://www.usedby.ai/methodology