Case Study: Quantcast achieves large-scale GDPR compliance and safe refactoring with Sourcegraph

How Sourcegraph code search enabled large scale refactoring at Quantcast

Quantcast, a machine-learning-driven advertising and audience insights company, had amassed thousands of repositories as its engineering team grew. That scale made organization-wide refactoring and GDPR readiness difficult, especially when engineers needed to find where personal data like IP addresses was handled across many codebases.

Using Sourcegraph code search and saved searches, Quantcast was able to search with regular expressions across every repository, identify code paths involving personal data, and share results with code owners. Sourcegraph helped the team complete major GDPR-related cleanup in just a few days instead of months, saving hundreds of developer hours and enabling ongoing monitoring with email alerts to reduce compliance risk without disrupting production stability.

Quantcast

Simon Law

Staff Software Engineer