Case Study: ASOS improves code quality and maintainability with GitHub Copilot

ASOS boosts test coverage from 38% to 100% with GitHub

ASOS was facing frequent production issues and growing technical debt, with defects escaping code reviews and fragile code slowing down every change. This led to a lack of confidence in their releases. To address these challenges, ASOS turned to GitHub and implemented GitHub Copilot to improve code quality and maintainability.

GitHub's solution involved embedding automated agents for code review, refactoring, and test generation directly into ASOS's development workflows. By enabling Copilot Code Review and making it a required reviewer, the team caught bugs earlier and enforced standards consistently. The implementation resulted in measurable improvements, including a dramatic increase in test coverage from 38% to 100% and a significant reduction in escaped defects and production issues.

ASOS