HTTP headers: serverless programming for the network

" summary

Covers how to use specific HTTP headers (Vary, Link, Content-Security-Policy, Referrer-Policy, Client-Hints, Clear-Site-Data, Alt-Svc) and upcoming/proposed headers (Feature-Policy, Variants, Early-Hints, Origin-Policy) to control request/response routing, security and performance in serverless architectures. Focuses on using network-level header controls as an alternative to in-page tags or scripts to influence browser behavior.

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