Today, we are proud to announce that MarkApp is officially recognized as a Google Certified Buyer through our omnichannel buying platform, Harion DSP — reinforcing our commitment to scalable, high-quality, and performance-driven media execution across global markets.
Trust, transparency, and technical compliance have become critical differentiators in modern programmatic advertising.
What It Means to Be a Google Certified Buyer
Becoming a Google Certified Buyer represents more than technical integration.
It validates:
- Infrastructure quality and reliability
- Compliance with Google ecosystem standards
- Secure and transparent transaction capabilities
- Scalable programmatic buying capabilities
This milestone further strengthens our position as a global AdTech company operating across CTV, mobile apps, and web environments.
Why This Matters for Advertisers and Agencies
As the advertising ecosystem becomes increasingly fragmented, buyers are prioritizing:
- Trusted buying infrastructure
- Transparent execution
- Omnichannel reach
- Cross-device campaign activation
- Performance-driven optimization
This certification strengthens confidence in our ability to deliver scalable and efficient media buying solutions globally.
How Harion DSP Enables Omnichannel Buying
Unified Media Buying Across Every Screen
Harion DSP enables advertisers and agencies to activate campaigns across:
- Connected TV (CTV)
- Mobile applications
- Web environments
through a single omnichannel buying platform.
Flexible Buying Models
Our platform supports:
- CPM
- CPC
- CPA
allowing campaigns to align directly with branding, engagement, and performance objectives.
Performance-Driven Optimization
Harion DSP combines:
- Cross-device targeting
- Audience activation
- Real-time optimization
- Performance-focused execution
to help advertisers maximize efficiency and measurable outcomes across channels.
Built for Agencies and Brands
Harion DSP is designed for:
- Agencies managing multiple client objectives
- Brands seeking performance and scale
- Retail and e-commerce advertisers focused on ROAS and CPA optimization
while maintaining operational flexibility and transparency.
Leadership Perspective
Sotiris Oikonomou, Managing Director at MarkApp, commented:
“Becoming an official Google Certified Buyer is an important milestone for us and for Harion DSP. It reinforces our focus on building scalable, trusted, and performance-driven infrastructure for advertisers and agencies operating across today’s omnichannel ecosystem.”
The Business Impact
This certification enables us to:
- Expand global buying capabilities
- Strengthen ecosystem trust and compliance
- Improve operational scalability
- Deliver more efficient omnichannel campaign execution
Looking Ahead
As programmatic advertising evolves toward more intelligent and performance-driven environments, trusted buying infrastructure will continue to play a critical role.
We remain focused on expanding Harion DSP as a scalable omnichannel platform built to support the future of digital advertising.



