What Is CDN? The Complete Guide for DevOps Engineers

CDNs (Content Delivery Networks) are crucial for enhancing site speed, reliability, and security. They work by distributing content across globally located servers to reduce latency, offload server load, and protect against common cyber attacks. Key components include edge servers, origin shields, and control planes. Advanced features like edge computing and dynamic content optimization offer additional benefits, such as handling authentication operations at the edge. This guide covers the step-by-step implementation of a CDN, common pitfalls, and monitoring practices to ensure optimal performance.