How Cloudflare's Architecture Allows Us to Scale to Stop the Largest Attacks

What this post added

This post details Cloudflare's architectural approach to scaling its DDoS mitigation capabilities, contrasting it with legacy hardware-based solutions. It explains how Cloudflare's distributed, software-defined network, built on commodity hardware and BGP routing, allows for cost-effective scaling and the ability to absorb massive attacks. The post also highlights how Cloudflare's bandwidth purchasing model (95th percentile billing) makes DDoS mitigation effectively free for the company, enabling services like Project Galileo.