The InstantConfig behavior

Enable this option to apply settings in this base configuration to all incoming requests for subcustomer hostnames, without explicitly adding those hostnames to the base configuration.

Once enabled, you don't need to manually add each applicable hostname as a Property Hostname to this base configuration. However, it only applies to non-secure (HTTP) hostnames. So, this base configuration can only process HTTP requests.

How do I set this up?

To start, you need to set up a non-secure HTTP Property Hostname. For example, you could use the Add Instant Config Hostname functionality via the Property Hostnames content panel.

With the base configuration saved, you need to do the following:

  1. Create an endpoint for subcustomers, and have them CNAME to this endpoint. For example, a subcustomer "," would need to CNAME to your endpoint, ""
  2. Create a wildcarded (*) DNS record to CNAME all of your subcustomers to the Edge hostname created with the non-secure HTTP Property Hostname you set up in this base configuration. For example, "*" would need to CNAME to ""

You only need to perform both of the steps above a single time, unless you need to change the hostname.