Update zone description

Author: jhutchings1

src/content/docs/fundamentals/resource-hierarchy/zones/index.mdx

@@ -7,7 +7,7 @@ sidebar:
 
 import { DirectoryListing } from "~/components";
 
-A _domain_ or _domain name_ is the location of a website or application, or what an end user types into their browser to get to your website (`example.com`).
+A _domain_ or _domain name_ is the location of a website or application, or what an end user types into their browser to get to your website (`example.com`). At Cloudflare, domain names get bound into what we call **Zones**. Zones are one of the main ways we group settings throughout the product for features that are related to your network configuration.
 
 <DirectoryListing />