{% hint style="info" %} This example is only applicable where your top level domain is fully delegated to Siteglide. If using External DNS Step 2 would not be done in Siteglide but instead wherever your DNS is managed. {% endhint %}
You might want to have www.example.com on one Siteglide instance and app.example.com (or any other subdomain) on another Siteglide instance.
First add your subdomain to the second instance as a new domain:
Then go to the DNS records of your fully delegated domain and create a CNAME as follows:
| Name | Type | Value |
| app | CNAME | example.com |
This will use the SSL certificate from the top level domain and resolve correctly to the new instance.