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Zemanta
Content discovery and audience development tools, enabling publishers to reach an engaged community and extend content to new readers
About Zemanta
Zemanta operates as a sophisticated demand-side platform (DSP) focused on programmatic native advertising, now under the ownership of Outbrain. The company was founded in 2007 in Ljubljana, Slovenia, by Boštjan Špetič, Andraž Tori, and Ales Spetic, marking them as some of the first Slovenian entrepreneurs to secure foreign venture capital. The founders' journey began with a victory at the London Seedcamp competition, which provided the initial seed capital to develop their business idea. Andraž Tori's background includes co-founding a multimedia center and developing open-source video editing solutions, while Boštjan Špetič possesses extensive experience in product development, sales, and marketing. Both are also co-founders of the Slovenian angel fund, Silicon Gardens.
Initially, Zemanta started by building tools for the blogosphere, including a web-based personal assistant and what would later be called a "native exchange". A significant pivot occurred in 2014 when the company launched its first content/native DSP, which became its flagship product. This strategic shift positioned Zemanta as a key player in the evolving adtech landscape. The company's trajectory culminated in its acquisition by content discovery platform Outbrain in July 2017. Post-acquisition, Zemanta continues to operate its platform as a standalone product, with its research and development center remaining in Slovenia, while leveraging Outbrain's global network and resources to expand its reach.
The business provides a platform for brands and digital advertising agencies to automate and optimize their native advertising campaigns across more than 50 native ad networks, including major players like Yahoo and Facebook. Its revenue model is centered on providing programmatic access to this ad inventory through its DSP. The platform, Zemanta One, is described as a multi-channel DSP built for performance, allowing clients to manage campaigns across native, display, and video formats from a single dashboard. A key feature is its bidding algorithm, which can be based on predicted user engagement, moving beyond simple impressions to focus on post-click actions like time on site, visits, and conversions. By integrating with analytics tools like Google Analytics and Adobe Analytics, it enables advertisers to optimize campaigns based on tangible outcomes and return on ad spend.
Source: Dealroom company dataAt a glance
- Founded
- 2007
- Headquarters
- Ljubljana, Slovenia
- Sector
- Marketing
Knowledge graph
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Investors
From Dealroom's funding and investor records, grouped by the round each investor first entered.
Seed3 investors entered at this stage
Seedcamp
Union Square Ventures
Eden Ventures
Series A2 investors entered at this stage
The Accelerator Group
Joyance Partners
Source: Dealroom Talent Intelligence.
Global footprint
Market sentiment
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Reading the room on X — pulling top posts and synthesizing themes…
Source: X recent search ranked by engagement (likes + retweets) · Synthesis by Claude · Cached for 1 hour
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