---
"@context": https://schema.org
"@type": TechArticle
"@id": https://www.twilio.com/docs/sendgrid/glossary/cdn#article
headline: Content delivery network
description: "*Service Provider*. A global network of servers that stores and serves copies of website content to website visitors using the server geographically closest to each website visitor. "
url: https://www.twilio.com/docs/sendgrid/glossary/cdn
inLanguage: en
dateModified: 2026-07-23T16:57:51.000Z
author:
  "@type": Organization
  name: Twilio Developer Education Team
publisher:
  "@type": Organization
  name: Twilio
---

# Content delivery network

*Service Provider*. A global network of servers that stores and serves copies of website content to website visitors using the server geographically closest to each website visitor.

A content delivery network (CDN) selects the servers for delivery based on the geographic locations of the website visitor, the original webpage, and content delivery server. Through a CDN, website visitors experience reduced latency and load times while the original web server reduces bandwidth costs and improves reliability.

A CDN copies your static website files to other servers in various geographic locations. These are called *points of presence* (POP) or edge servers. This process is called *caching*.

When a website visitor tries to go to your website, their request gets routed to the closest edge server instead of your website.

This speeds access to your website content.