
PUBLISHER CLOUD
HIRO™: Your Antidote to Signal Loss
Turn your anonymous traffic into targeted, addressable audiences and drive premium demand, higher eCPMs, and more revenue.

The rise in identity fragmentation marked a turning point for better audience targeting.
HIRO (Helping Identity Reveal Opportunity) helps publishers boost addressability across all browsers by mapping first-party cookies to stable identifiers—connecting inventory to more programmatic demand, while protecting user privacy in an increasingly cookieless world.

HIRO isn’t just another product — it’s an essential tool that helps us drive real revenue for our publishers. We independently validated the performance through our own framework, and the results speak for themselves: increased monetization, better CPMs, and more money in our publishers’ pockets. That’s value we can prove.
- Heather Carver
Chief Strategy Officer of Raptive
The ad-tech space is full of overhyped solutions that don’t deliver, but HIRO is the real deal. It seamlessly bridges the gap between our publishers and the demand side, turning non-addressable audiences into real revenue. It’s refreshing to work with a partner that actually delivers on its promises—HIRO has driven measurable CPM lifts and proven itself as a critical piece in our ability to drive monetization for our creators and publishers.
- Paul Bannister
Chief Strategy Officer of Raptive
Extensive Multi-Platform Reach & Scale



See What Sets HIRO Apart
Unique Publisher Relationships
Leverage Zeta’s direct publisher and supply partner integrations for seamless DSP connections, maximizing reach and monetization.
Scaled First-Party Activation
Activate first-party data at scale by mapping hashed emails to stable identifiers via the Zeta Identity Graph for transparent bidstream resolution.
Authenticated Email Events
Continuously verify user identity by linking first-party cookies to email events while ensuring privacy with anonymous email hashes.
Programmatic Ad Optimization
Maximize programmatic performance with best practices that prioritize consumer privacy and respect user choices across channels and devices.
Turning Unknown Visitors into Addressable Audiences
Want real revenue impact? Zeta’s solution taps into one of the largest identity graphs in the U.S., enriched with first-party data and hashed emails, unlocking new, valuable audiences for advertisers. Our seamless, interoperable approach increases match rates, drives greater competition for inventory, and delivers stronger eCPMs for publishers.

1st Party Cookie, Hashed Email & ESP IDs sent to Zeta servers for authentication
Frequently Asked Questions
Everything you need to know before buying — from licensing to updates and usage.
Stay in the Know with Our Featured Content
Ready to Let HIRO™ Work for You?
Connect with one of our addressability specialists to learn more about the Zeta Publisher Cloud and how it can help identity reveal opportunity.


