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Last Updated: 12/04/2025
in Enrich
Overview Publishers and ad tech partners can choose to use the ID5 Graph to enrich their programmatic transactions with additional data. The Graph enables both probabilistic and deterministic connections between ID5 IDs and Platform Cookie IDs, w...
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Last Updated: 12/04/2025
in Privacy
Overview The Privacy API Opt-out endpoint allows authorized partners to opt out users from ID5 tracking using various privacy identifiers including ID5 ID, MAIDs, email addresses, and hashed emails. The system handles multiple identifier types an...
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Last Updated: 11/28/2025
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: 11/26/2025
in Retrieve ID5 IDs Prebid
ID5 Prebid Identity Insights Identity Insights is enabled through ID5's Analytics Adapted for Prebid, available for Prebid.js version 7.27.0 or higher
To help publishers better understand the value of working with ID5, we have launched Ident...
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Last Updated: 11/25/2025
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: 11/25/2025
in Get Started
Core Value Proposition
Bid on more impressions, track conversion attribution to ultimately improve bidding strategies and campaign performance in all digital advertising environments with the ID5 ID
Enable clients to reach and engage wit...
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Last Updated: 10/08/2025
in Enrich
Overview ID5's Graph can empower ad tech platforms to unlock greater value by connecting users across both cookie-based and cookieless environments. By combining the scale of the ID5 ID footprint with the intelligence of the ID5 Identity Graph, E...
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Last Updated: 10/08/2025
in Enrich
Overview ID5's Graph can empowers publishers (and their tech partners) to unlock greater value by connecting users across both cookie-based and cookieless environments. By combining the scale of the ID5 ID footprint with the intelligence of the I...
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Last Updated: 09/11/2025
in Retrieve ID5 IDs
What is Partner Data?
Partner Data includes all signals provided by partners that assist ID5 in accurately identifying users. By sharing additional information, you improve the precision, stability, and effectiveness of user identification....
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Last Updated: 09/09/2025
in Access Identity Graphs
Exchanging data with ID5 Our main delivery mechanism is to exchange data directly to an AWS S3 bucket or an S3-compatible object storage (e.g., GCS) controlled by the client. There are several different ways to share data: 1. Client-Hosted Buc...