How to mitigate DDoS attacks at the CDN Layer?

Senior-level CDN architecture focuses on maximizing the 'Offload' and minimizing latency through edge compute, intelligent routing, and security integration.

At a senior level, you must manage global state and consistency. For instance, in a Multi-CDN setup, you use a DNS or HTTP-based load balancer to switch providers based on real-time performance telemetry. Security involves deploying WAF rules at the edge to filter SQLi/XSS before they reach the VPC. Performance is optimized by using BBR (Bottleneck Bandwidth and Round-trip propagation time) to handle congestion more effectively than traditional CUBIC TCP.