A production ENVIRONMENT USUALLY has two difference instances of AEM running. One is the author instance, and the other is the publish instance. These two instances are usually kept in two different settings.

The author instance is where you will enter and MANAGE content for your website. This is where you will administer your site as well. The author environment is usually kept behind a FIREWALL. The publish instance is where you will MAKE your content available for your targeted audience. The publish environment is usually kept in a Demilitarized Zone (DMZ).

A production environment usually has two difference instances of AEM running. One is the author instance, and the other is the publish instance. These two instances are usually kept in two different settings.

The author instance is where you will enter and manage content for your website. This is where you will administer your site as well. The author environment is usually kept behind a firewall. The publish instance is where you will make your content available for your targeted audience. The publish environment is usually kept in a Demilitarized Zone (DMZ).