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Last Updated: 05/18/2026
When ID5 provides an ID5 ID, we may also include certain metadata. Below you will find the different types of metadata we support and the values they could contain:
Link Type
A/B Testing Control Group
Link...
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Last Updated: 04/24/2026
in Retrieve ID5 IDs
Overview
We recommend that you deploy ID5 in CTV environments via a server to server integration. We do support alternative integration pathways depending on your requirements. If required, please reach out to your ID5 customer services rep...
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Last Updated: 04/24/2026
in Cookie Sync with ID5
Process Overview
While third-party cookies are still in use, ID5 can synchronize with ad tech vendors to enhance user recognition, improving audience addressability and monetization.
ID5 can provide a pixel that can be added to publis...
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Last Updated: 04/24/2026
in Cookie Sync with ID5
Process Overview
As part of our synchronization process, we will need to make requests to your system that will return back to ID5 with your UID. There are several methods supported for this process that are explained in more detail.
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Last Updated: 04/23/2026
in Access Identity Graphs
Overview
With the Partner Graph File Transfer, your AWS S3 bucket will be filled at regular time intervals with either (1) streaming new and updated Match Partner UIDs every 30 minutes coming from the cascading process or (2) dail...
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Last Updated: 04/08/2026
in Retrieve ID5 IDs
Publisher Integration of the ID5 ID via Amazon Publisher Services Enabling ID5 in Web Environments Amazon's APS is the leading suite of cloud services that helps publishers build, monetize, and grow their digital media business. Read below for...
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Last Updated: 03/31/2026
in Privacy
User Rights Propagation Summary This document details ID5's process for disseminating user opt-out and data deletion requests to its partners. As part of ID5's ongoing commitment to robust privacy practices, this system ensures that when users e...
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Last Updated: 03/27/2026
in Retrieve ID5 IDs
What are Google Secure Signals?
Google Secure Signals enables publishers to deploy the ID5 ID and make it available as a secure signal on RTB requests through Authorized Buyers, Open Bidding and SDK bidding. Signals will only be genera...
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Last Updated: 03/06/2026
in Get Started
Core Value Proposition
Send more identifiable bid requests to buyers to increase CPMs and overall publisher revenue
Deliver strategic value to publishers by supporting their transition to the cookieless future
Reduce operational cost...
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Last Updated: 02/09/2026
in Privacy
This endpoint was deprecated on 9th February 2026. Please use the Opt-Out API Overview The Mobile Opt-in and Opt-out API allows users to opt in and out of ID5 tracking via MAIDs. Opt Out Request Example URL https://api.id5-sync.com/priv...