The end of the road for Server: cloudflare-nginx

What this post added

This post details a significant internal architectural shift in Cloudflare's edge stack, moving away from a heavy reliance on NGINX for core request handling. It marks the deprecation of the `Server: cloudflare-nginx` header in favor of a simpler `Server: cloudflare` header, reflecting the increasing use of custom-built components like RRDNS and Lua, and the strategic deprecation of specific NGINX instances. This evolution signifies a move towards greater control and customization of their core infrastructure, reducing dependency on specific third-party software.