Case Study: Stack Overflow eliminates DDoS attacks and scales bot management with Cloudflare

Flo reduces cloud costs by 33% with Cloudflare

Stack Overflow, a leading global developer platform, faced escalating layer 7 DDoS attacks and a surge in AI scraping bots that disrupted service and strained infrastructure. Their previous CDN could not effectively block attacks at the edge, leading to site instability. To eliminate this impact and reduce costs, they turned to vendor Cloudflare for its DDoS protection, Web Application Firewall (WAF), and Bot Management solutions.

By implementing Cloudflare's security suite at the edge, Stack Overflow automatically mitigated DDoS attacks before they reached the origin, ensuring consistent availability. The solution reduced CDN costs by approximately 33% and empowered a lean team of three to manage bot traffic that would typically require large teams. Cloudflare's platform also provided critical visibility, enabling Stack Overflow to launch a new pay-per-crawl program to monetize AI traffic, turning a security challenge into a revenue opportunity.

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