Setting Cookie on the Main Domain

This feature determines whether first-party identifiers (f.e. JENTIS User-ID) is stored at the website’s subdomain or main domain level in your containers.

To configure this, go to Account Settings on the JENTIS Platform and click on Containers. Then, create a new container by clicking on Add New Container, or choose the container you want to edit and click on the three dots > Edit.

You will see the Main Domain Cookie feature in the Advanced Settings on your container configuration.

By default, the Main Domain Cookie option is enabled, which means the first-party identifiers are configured to be set at the main domain level.

To demonstrate the impact of setting the JENTIS Cookie on the main domain or subdomain levels, let's consider the following example:

JENTIS is implemented in this domain https://ckion-dev.jtm-demo.com/. The behavior of the JENTIS First-Party User ID (jts-rw cookie) can be observed based on whether the Main Domain Cookie is enabled or disabled:

1. If the Main Domain Cookie is enabled (Default):

   • The cookie is set on the main domain level, in this case: .jtm-demo.com.

   • This means the cookie is accessible across all sub-domains of jtm-demo.com, such as ckion-dev.jtm-demo.com, analytics.jtm-demo.com, etc.\

2. If the Main Domain Cookie is disabled:

   • The cookie is set on the current sub-domain level, in this case: ckion-dev.jtm-demo.com.

   • This means the cookie is only accessible within the specific sub-domain ckion-dev.jtm-demo.com and not shared with other sub-domains.

Important: Disabling the Main Domain Cookie (which sets the JENTIS cookie on the subdomain) will result in users from the subdomain receiving different identifiers, such as JENTIS User-ID. This change can impact your tracking and data consistency.

In case you’ve already had a container configured before 11 Dec 2024:

• If your container is configured to your main domain (e.g., example.com), the Main Domain Cookie option will be enabled. This means the first-party identifiers will be set at the main domain level.

• If your container is configured to a subdomain (e.g,. shop.example.com), the Main Domain Cookie option will be disabled. This means the first-party identifiers will be set at the subdomain level.

To change this configuration, follow the steps mentioned above.