Additional context about www on create-subdomain-record intro

Author: RebeccaTamachiro

src/content/partials/dns/create-subdomain-record.mdx

@@ -7,6 +7,8 @@ import { Example, Render } from "~/components";
 
 Most subdomains serve a specific purpose within the overall context of your website. For example, `blog.example.com` might be your blog, `support.example.com` could be your customer help portal, and `store.example.com` would be your e-commerce site.
 
+Even if you do not require specific subdomains, you might want to set up at least the `www` subdomain. It will usually point to the same content as what you have on the apex domain (`example.com`) or use a [redirect](/fundamentals/setup/manage-domains/manage-subdomains/#redirect-a-subdomain-to-the-apex-domain). Having a DNS record on the `www` subdomain helps guarantee that a visitor who types `www.` in front of your domain address on their browser can still find your website or application.
+
 ## Subdomain records
 
 To create a new subdomain, you would first add the subdomain content at your [host](/fundamentals/setup/manage-domains/#host-your-domain).