---
title: "Concepts"
url: "/docs/concepts/"
kind: "hub"
summary: "How Arion works: the architecture, the life of a request, the filter chain, the configuration model and the Envoy compatibility promise."
---

> Arion site index: [/llms.txt](/llms.txt)

# Concepts

How Arion works: the architecture, the life of a request, the filter chain, the configuration model and the Envoy compatibility promise.

The mental model behind every feature page: how Arion is put together, how a request travels through it, and how configuration reaches it.