The Trade Desk Cookie Matching Service Tag Setup Guide

How it works

This solution requires Tealium iQ and Tealium AudienceStream. The Trade Desk Cookie Matching Service tag sets a new variable named ttd_uuid. It is stored as a session cookie as well as a standard data layer variable and triggers only once per session, by default.

The Trade Desk Cookie Matching Service tag communicates with the Trade Desk servers to request the current user’s identifier. When this value is returned to the tag, it is passed to AudienceStream so that it can be used to populate a visitor attribute containing the synced user ID. This attribute can then be used in The Trade Desk connector actions as a mapping to “Trade Desk ID (TDID)”.

Data Layer Variables

Before you add the tag, create the following data layer variables:

ttd_uuid - UDO Variable
utag_main_ttd_uuid - First Party Cookie

These variables are populated automatically by the cookie matching tag.

Tag Configuration

Go to the Tag Marketplace and add the Trade Desk Cookie Matching Service tag (see how to add a tag).

After adding the tag, configure the below settings:

Tealium Account - leave blank unless sending The Trade Desk user ID to a different account.
Tealium Profile - leave blank unless sending The Trade Desk user ID to a different profile.

Load Rules

Load rules determine when and where to load an instance of this tag on your site.

This tag only needs to run if the cookie match has not already occurred. You can determine this by using the cookie variable utag_main_ttd_uuid in a load rule condition such as:

utag_main_ttd_uuid is not defined

The tag also has built-in logic to only fire when the cookie is not defined, but using a load rule will ensure that the tag is not loaded on a page when it has already run for the current session.

Data Mappings

Mapping is the process of sending data from a data layer variable to the corresponding destination variable of the vendor Tag. For instructions on how to map a variable to a tag destination, see data mappings.

Destination Name	Description
`tealium_account`	The Tealium account to sync the user ID to (defaults to current account).
`tealium_profile`	The Tealium profile to sync the user ID to (defaults to current profile).
`gdpr`	Pass a value that indicates if the current user resides in the European Union (EU), and therefore subject to GDPR. Set to `0` (default) if the user is not subject to GDPR. Set to `1` if the user is subject to GDPR.
`gdpr_consent_string`	Base64 URL-encoded GDPR consent string.
`order_id`	Overrides the `_corder` e-commerce extension value.

AudienceStream Setup

Once you save and publish your changes to Prod, the new variables will be available in AudienceStream. The ttd_uuid variable will appear as an event attribute, but you must create it as a visitor attribute so that it can be used in The Trade Desk connector action.

To add a visitor attribute to store the ttd_uuid value:

Navigate to AudienceStream > Attributes.
Click Add Attribute and select Visitor scope, then String data type.
Enter the name Trade Desk User ID.
Click Add Enrichment and select Set String.
From Set String to drop-down menu select ttd_uuid.
Click Finish.

You can now create audiences of visitors that have their Trade Desk User ID populated. Those audiences will be used in connector actions with The Trade Desk. You will map this attribute to the “Trade Desk ID (TDID)” parameter in The Trade Desk connector actions.