Demand-Side Programmatic Media Buying
Passendo vs StackAdapt
Structured technology and market comparison · 2026
Direct Feature Comparison
Passendo · vs · StackAdapt| Attribute | PAPassendo | STStackAdapt |
|---|---|---|
| Market Cluster / Sector | Demand-Side Programmatic Media Buying | Demand-Side Programmatic Media Buying |
| Business Model / Role | AdTech Vendor | AdTech Vendor |
| Platform Focus | Email adtech platform for newsletter monetisation and programmatic buying. | Omnichannel DSP for programmatic advertising, email, data activation, and measurement. |
| Company Size | 10–49 employees | 201–500 employees |
| Headquarters | Denmark | Canada |
| Year Founded | 2016 | 2013 |
| Dossier & Alternatives |
Analyze all overlapping signals and tech stacks for Passendo and StackAdapt
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Comparison Analysis
What is the main difference between Passendo and StackAdapt?
When comparing Passendo and StackAdapt, both platforms operate within the Demand-Side Platform (DSP), Email & Newsletter, and Native & Contextual Ads ecosystem. Passendo is positioned as Email adtech platform for newsletter monetisation and programmatic buying, whereas StackAdapt focuses on Omnichannel DSP for programmatic advertising, email, data activation, and measurement. Decision-makers evaluate both solutions when orchestrating their commercial monetization and technology stack.
What are the top alternatives to Passendo and StackAdapt?
When evaluating Passendo and StackAdapt, enterprise buyers also consider other platforms in Demand-Side Platform (DSP), Email & Newsletter, and Native & Contextual Ads. 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 Passendo and StackAdapt compare?
Passendo is headquartered in Denmark (founded in 2016) with 10–49 employees. StackAdapt is based in Canada (founded in 2013) with 201–500 employees. Complete ownership, subsidiary trees, and corporate affiliations are documented across Polaris7.
Market Signals
Recent Market Signals & Activity: Passendo vs StackAdapt
Documented market movements, strategic partnerships, product releases, and regulatory developments mapped across Polaris7.
Passendo
Recent Signals
No recent market signals documented for Passendo in the current tracking window.
StackAdapt
Recent Signals
- ·ViantProduct & Platform Launch
Wurl launches new CTV ads solution with demand-side platforms
Wurl has introduced a new connected TV advertising solution integrating its Content Intelligence technology with major demand-side platforms. Partner buying platforms incorporating the technology include Yahoo DSP, StackAdapt, and Viant.
- Wurl launched a new connected TV (CTV) advertising solution.
- The solution integrates Wurl's Content Intelligence technology directly with DSPs.
- Yahoo DSP, StackAdapt, and Viant are named as participating buying platforms.
- ·StackAdaptProgrammatic & Supply Chain
StackAdapt advertisers can now buy ads on 150+ audio publishers via SoundCast
On November 9, 2026, Paris-based audio marketplace SoundCast announced a technology partnership with StackAdapt, enabling StackAdapt advertisers and agencies to programmatically buy SoundCast's entire audio inventory directly from the StackAdapt platform. The inventory spans more than 150 publishers, including Le Figaro, Ouest France, Acast, and Audioboom, covering podcasts, live streams, digital radio, in-store audio, and in-game audio, available via open RTB or negotiated deals. The integration is described as 'now live globally,' with SoundCast separately noting coverage across Europe and North America, though no pricing, audience figures, or country lists were disclosed. The partnership extends StackAdapt's audio supply, previously anchored by US broadcast radio via iHeartMedia, into French and European digital audio as automated buying gains share in the audio ad market.
- SoundCast and StackAdapt announced a technology partnership on November 9, 2026, making SoundCast's audio inventory from 150+ publishers programmatically buyable on StackAdapt.
- Inventory includes podcasts, live streams, digital radio, in-store audio, and in-game audio, available via open RTB or negotiated deals.
- Named publishers include Le Figaro, Ouest France, La Provence, Radio Classique, Acast, and Audioboom.
- ·SegmentStreamProduct & Platform Launch
New integrations: Amplitude, OpenAI Ads, StackAdapt
SegmentStream announced three new data source integrations: Amplitude product analytics events, OpenAI Ads spend, and StackAdapt programmatic spend. These now flow into SegmentStream for cross-channel attribution, incrementality, and budget optimization. Amplitude is used by over 4,900 companies and 26% of the Fortune 100. OpenAI Ads and StackAdapt data sources are available immediately via API token setup.
- SegmentStream launched three new data source integrations on September 15, 2026: Amplitude, OpenAI Ads, and StackAdapt.
- Amplitude product analytics events, OpenAI Ads spend, and StackAdapt programmatic spend now flow into SegmentStream for cross-channel attribution, incrementality, and budget optimization.
- Amplitude is used by over 4,900 companies and 26% of the Fortune 100.
Compare their exact ecosystem overlaps.
Explore all deep relationships in Polaris7. Discover exactly which mutual clients, integrated technologies, and overlapping partners Passendo and StackAdapt share across the market ecosystem.
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