# How ASOS uses GitHub copilot

**90%**: “That peer-led rollout helped ASOS reach over 90% Copilot adoption across the engineering team within months.”

As published on [github.com](https://github.com/customer-stories/asos), July 2026. Captured by usedby on 2026-10-05.

- Company: [ASOS](https://www.usedby.ai/companies/asos.md)
- Tool: [GitHub copilot](https://www.usedby.ai/tools/github-copilot.md)
- Teams: Engineering, Product

## What the story says

ASOS migrated its repositories to GitHub and uses GitHub Copilot across its engineering team for navigating unfamiliar codebases, delegating development tasks to cloud agents, prototyping, and automated first-pass code reviews. It also built custom agents for tasks such as bug fixing and rolls out prompts across repositories.

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

> With the migration in place, ASOS focused on getting Copilot into the hands of every engineer. Newark used Copilot usage metrics to identify power users early, then turned them into champions who could show peers what was possible in their own codebases.

- **nine days**: “With Copilot cloud agent, we delivered in nine days what we'd estimated at two months.”
- **10 minutes**: “Tasks that once took an hour can now often be completed in 10 minutes of agent runtime.”
- **56 hours**: “PR first approval times peaked at 56 hours, so the ASOS team enabled Copilot Code Review across every repository to take the first pass on code reviews.”

> There's always 100 things that we want to build. With GitHub Copilot, we get to do more of them.
>
> Chris Newark, Principal Software Engineer

## What usedby checked

We compared the story with its live page on 2026-10-05.

- Checked: the figure 90% is printed word for word on the page, near the name of ASOS.
- Checked: the passage quoted above is copied word for word from the page, near the name of ASOS.
- Checked: the publication date is read from the page’s own metadata, never guessed.
- Checked: ASOS uses GitHub copilot. Confirmed line. Latest check across sources: 2026-10-05.
- Not checked: the result itself. We quote it; we did not measure it.

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