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AdTech Vendor · Data Provider / Broker

First-id vs netID

Structured technology and market comparison · 2026

Direct Feature Comparison

First-id · vs · netID
Market Cluster / Sector
First-idAdTech Vendor · Data Provider / Broker
netIDAdTech Vendor · Data Provider / Broker
Platform Focus
First-id

Privacy-first deterministic identity infrastructure for cookieless advertising.

netID

European identity and consent infrastructure for cross-site login and privacy.

Company Size
First-id10–49 employees
netIDUnknown
Headquarters
First-idFR
netIDDE
Year Founded
First-id2022
netID2018

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Comparison Analysis

What is the main difference between First-id and netID?

When comparing First-id and netID, both platforms operate within the Identity Management & Universal ID, In-App, and AdTech Vendor ecosystem. First-id is positioned as Privacy-first deterministic identity infrastructure for cookieless advertising, whereas netID focuses on European identity and consent infrastructure for cross-site login and privacy. Decision-makers evaluate both solutions when orchestrating their commercial monetization and technology stack.

What are the top alternatives to First-id and netID?

When evaluating First-id and netID, enterprise buyers also consider other platforms in Identity Management & Universal ID, In-App, and AdTech Vendor. You can discover the full competitive landscape and evaluate other alternatives by viewing their respective footprint profiles on Polaris7.

How do the corporate scale, structure, and headquarters of First-id and netID compare?

First-id is headquartered in FR (founded in 2022) with 10–49 employees. netID is based in DE (founded in 2018) with Unknown. Complete ownership, subsidiary trees, and corporate affiliations are documented across Polaris7.

Market Signals

Recent Market Signals & Activity: First-id vs netID

Documented market movements, strategic partnerships, product releases, and regulatory developments mapped across Polaris7.

FI

First-id

Recent Signals

  • ·First-id

    ArcSpan accélère la monétisation des audiences des éditeurs français grâce à l’intégration native de First-id

    Les éditeurs équipés de First-id peuvent désormais créer, analyser, valoriser et activer leurs audiences dans ArcSpan AMS, sans développement supplémentaire.

  • ·First-id

    First-id annonce de nouveaux partenariats et intégrations

    First-id a publié plusieurs annonces récentes, notamment l'intégration native avec ArcSpan pour la monétisation des audiences, un partenariat avec Commanders Act pour le contrôle de l'identité marketing, et l'extension de l'offre CTV de Stamp. Ces annonces s'ajoutent à une série d'autres mises à jour de partenariats et d'intégrations.

  • ·ExchangeWireIdentity

    ArcSpan Integrates First-id for Persistent Cookieless Publisher Identity

    ArcSpan, an AI-powered audience monetization platform for premium publishers, announced a native integration with First-id, a persistent, deterministic identity solution adopted by over 35,000 media and advertiser sites across 101 countries. This integration allows publishers using First-id to resolve audience signals within ArcSpan AMS without custom integrations. Publishers can build, analyze, and activate first-party audiences across direct, programmatic, and data collaboration channels. The combined solution addresses the challenge of fragmented user identities by providing a persistent identifier that works without third-party cookies or logins, enabling improved audience continuity, deduplicated reach, and enhanced monetization opportunities. The integration is live and available to existing customers, supporting ArcSpan's expansion across EMEA.

    • ArcSpan announced a native integration with First-id on September 21, 2026.
    • First-id is a persistent, deterministic identity solution adopted by more than 35,000 media and advertiser sites in 101 countries.
    • The integration enables publishers to resolve audience signals against the First-id identifier within ArcSpan AMS.
NE

netID

Recent Signals

  • ·MeediaIdentity

    European netID Exec Discusses Deterministic IDs and AI's Impact

    In an interview, Daniel Dagehus, CTPO of the European netID Foundation, discusses the evolving role of deterministic identifiers in the open web. He argues that while AI and probabilistic models are useful for planning and simulation, deterministic IDs remain essential for campaign activation and delivery to real people across devices. netID has integrated with major ad tech platforms, including The Trade Desk, enabling advertisers to target deterministic segments. Dagehus emphasizes the importance of publisher login relationships to maintain direct user contact and independence from tech providers, especially as AI chatbots change the customer journey. He also highlights FedCM as a standard that can simplify logins and support publisher strategies for direct audience relationships.

    • Daniel Dagehus is CTPO of the European netID Foundation.
    • netID has integrated with The Trade Desk, allowing booking of netID and Utiq segments in its Data Marketplace.
    • netID is a deterministic identifier tied to user accounts and email addresses, providing cross-device identity.
  • ·HorizontIdentity

    Window for Open-Web ID Push Is Shrinking

    Commentary by Klaus Janke (Horizont) warns that the time to deploy deterministic identity solutions in the open web is running out. The article argues that practical adoption of deterministic identifiers such as NetID and Utiq is necessary for the open web to preserve reach and to sustain quality journalism as a pillar of democratic public life. The piece frames the issue as urgent: without widespread implementation of shared identifiers, publishers and the open web risk declining monetization and audience measurement capabilities.

    • Opinion piece authored by Klaus Janke published on 2026-08-19.
    • The article calls for practical deployment of deterministic identifiers such as NetID and Utiq for the open web.
    • The author links adoption of identity solutions to preserving reach for publishers and sustaining quality journalism.

Compare their exact ecosystem overlaps.

Explore all deep relationships in Polaris7. Discover exactly which mutual clients, integrated technologies, and overlapping partners First-id and netID share across the market ecosystem.