Case Study: Duolingo achieves stronger site resilience and simpler security with Fastly

Duolingo - Customer Case Study

Duolingo, the popular language-learning app with more than 113 million monthly active users, needed a way to improve site resilience and simplify security while reducing the disruption and engineering time caused by frequent DDoS attacks. The company wanted an edge security partner it could trust long term, and Fastly’s Next-Gen WAF and related security services fit the need.

Fastly implemented its Next-Gen WAF at the edge to block attack traffic, provide granular controls, and give Duolingo better visibility into incidents. The results were immediate: Fastly reduced DDoS impact in less than a week, cut troubleshooting time from dozens of engineering hours to just two to three hours, and helped prevent both external attacks and internal mistakes from taking services down.

Duolingo

Matt Brandman

Senior Engineering Manager