---
title: Concepts
description: Key concepts behind Privacy Proxy, including MASQUE protocols, deployment architectures, and privacy-preserving authentication.
image: https://developers.cloudflare.com/dev-products-preview.png
---

> Documentation Index  
> Fetch the complete documentation index at: https://developers.cloudflare.com/privacy-proxy/llms.txt  
> Use this file to discover all available pages before exploring further.

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# Concepts

Understand the key concepts behind Privacy Proxy, including how the protocol works, deployment architectures, and privacy-preserving authentication.

* [ How Privacy Proxy works ](https://developers.cloudflare.com/privacy-proxy/concepts/how-it-works/)
* [ Deployment models ](https://developers.cloudflare.com/privacy-proxy/concepts/deployment-models/)
* [ Authentication ](https://developers.cloudflare.com/privacy-proxy/concepts/authentication/)
* [ Geolocation ](https://developers.cloudflare.com/privacy-proxy/concepts/geolocation/)

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