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

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> 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.

# Concepts

Last updated Aug 25, 2026|Copy as Markdown|[View as Markdown](https://4f1c5cd2.previews.developers.cloudflare.com/privacy-proxy/concepts/index.md)|[Agent setup](https://4f1c5cd2.previews.developers.cloudflare.com/agent-setup/)

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

* [How Privacy Proxy works](https://4f1c5cd2.previews.developers.cloudflare.com/privacy-proxy/concepts/how-it-works/)
* [Deployment models](https://4f1c5cd2.previews.developers.cloudflare.com/privacy-proxy/concepts/deployment-models/)
* [Authentication](https://4f1c5cd2.previews.developers.cloudflare.com/privacy-proxy/concepts/authentication/)
* [Geolocation](https://4f1c5cd2.previews.developers.cloudflare.com/privacy-proxy/concepts/geolocation/)

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