---
title: Concepts
summary: >-
  Concepts are a collection of guides that introduce you to core ideas essential
  to understanding content delivery networks (CDNs) and Fastly.
url: https://www.fastly.com/documentation/guides/getting-started/concepts
---

- [Content and its delivery](https://www.fastly.com/documentation/guides/getting-started/concepts/content-and-its-delivery/)
- [Edge processing phases model](https://www.fastly.com/documentation/guides/getting-started/concepts/edge-processing-phases-model/)
- [Using Fastly's global POP network](https://www.fastly.com/documentation/guides/getting-started/concepts/using-fastlys-global-pop-network/)