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Monday, March 2nd, 2026 – 3:00 am
The digital advertising landscape is undergoing a profound transformation, driven by an increasing emphasis on supply-path optimization (SPO) and the imperative for Supply-Side Platforms (SSPs) to demonstrate their value beyond mere conduit functions. This evolving market dynamic has propelled the trend of sell-side curation, a strategy that has seen significant traction over the past few years. Underscoring this movement, Onetag, a global ad exchange and curation platform headquartered in Italy, announced its acquisition of Aryel, a prominent Italian creative ad tech platform, on Monday. This strategic move is poised to bolster Onetag’s sell-side curation capabilities with advanced tools for interactive ad creative development and testing, directly contributing to the training of its forthcoming AI-based deal optimization engine.
The Strategic Imperative for Differentiation in the SSP Market
The pressure on SSPs to differentiate themselves in an increasingly competitive and commoditized market has never been greater. As programmatic advertising matures, buyers are scrutinizing every node in the supply chain, demanding transparency and demonstrable value. This scrutiny has forced SSPs to move beyond simply connecting buyers and sellers and to actively engage in optimizing the advertising process. Sell-side curation has emerged as a key strategy for SSPs to add value by offering curated marketplaces of high-quality inventory and enabling more efficient deal-making.
Onetag, which originally launched as a Demand-Side Platform (DSP) in 2015 before pivoting to a performance-focused SSP for Procter & Gamble and subsequently expanding globally in 2020, has been at the forefront of this sell-side curation trend. The company launched its proprietary sell-side curation platform, Smart Curation, in 2022, aiming to carve out a distinct niche in the market.
Filippo Gramigna, co-CEO of Onetag, articulated the challenges faced by platforms in this sector: "The curation market has become crowded with non-differentiated middlemen. The best way to stand out in this increasingly crowded market is to make it easy for advertisers of all sizes to get started with curation and create their own deal IDs." This philosophy directly informed the acquisition of Aryel, a company whose technological prowess aligns perfectly with Onetag’s vision for enhanced advertiser engagement and deal creation.
Aryel’s Creative Innovation: Bridging the Gap for Advertisers
Aryel’s core strength lies in its ability to adapt existing creative assets to programmatic formats, a crucial capability for advertisers looking to leverage their existing campaigns within the dynamic world of programmatic advertising. The platform excels at reformatting creative assets to seamlessly fit standard IAB banner sizes and online video specifications, thereby reducing the friction for advertisers looking to deploy their campaigns across multiple channels.
Furthermore, Aryel’s specialization in interactive creative is a significant differentiator. Interactive ads have consistently demonstrated higher engagement rates and improved campaign performance compared to static formats. By integrating Aryel’s technology, Onetag aims to infuse its curated marketplace with a new level of dynamism. Onetag currently boasts a curated marketplace comprising 50,000 high-impact ad units, sourced through over 2,000 direct-to-publisher connections. The addition of Aryel’s interactive creative capabilities is expected to amplify the effectiveness of these placements, driving even better outcomes for advertisers.
Gramigna elaborated on the synergy: "In other words, placing interactive ads within already high-performing ad slots should make those placements even more effective at driving outcomes." This strategic integration is designed to elevate the advertiser experience by offering more engaging and impactful ad units.
Innovative Creative Formats and Future-Forward Applications
Aryel’s innovative creative formats offer tangible benefits for brands across various sectors. For instance, its "try it on" creative format is particularly valuable for apparel and accessories brands. An eyewear brand, for example, can utilize this feature to allow consumers to virtually try on different frames using their device’s camera. Crucially, this immersive experience is designed to occur entirely within a standard IAB banner, enabling users to interact with the product without ever leaving the publisher’s website. This seamless user journey enhances engagement and reduces bounce rates, contributing to more effective advertising.
Beyond visual engagement, Aryel has also been actively experimenting with interactive formats for AI chatbot interfaces. This forward-thinking development positions Onetag to tap into emerging advertising opportunities on burgeoning conversational AI platforms. As AI chatbots become increasingly prevalent in customer service and information retrieval, the potential for advertisers to engage with users within these conversational flows represents a significant new frontier. Onetag’s acquisition of Aryel preemptively positions the company to capitalize on these future advertising channels.
A Strategic Acquisition: Enhancing Capabilities and Expanding Reach
The relationship between Onetag and Aryel began approximately 18 months prior to the acquisition, with the success of their initial collaborations paving the way for this strategic move. The acquisition was supported by Onetag’s largest shareholder, Wise Equity, and marks Onetag’s inaugural acquisition.
While the specific deal price was not disclosed, Gramigna confirmed the completion of the acquisition and reported that the combined entity achieved $70 million in net revenue based on the previous year’s performance. This financial robustness underscores the strategic and commercial viability of the merger.
The acquisition brings Aryel’s entire team of 45 employees into Onetag, expanding the combined company’s headcount to approximately 130 individuals. The addition of Aryel’s four co-founders to Onetag’s leadership team is particularly noteworthy. Mattia Salvi, Aryel’s CEO, will assume the role of Chief Growth Officer and Head of Go-to-Market for the combined entity, bringing his expertise to drive Onetag’s expansion strategies.
The integration of the two companies is expected to be relatively seamless, given their geographical proximity. Aryel is located approximately an hour away from Onetag’s tech hub in Tuscany, Italy. This close proximity facilitates easier cultural and workflow integration, minimizing potential disruptions and accelerating the realization of synergies.
Future Growth Trajectory: US Expansion and CTV Integration
Onetag’s long-term strategic vision encompasses solidifying its presence in the European market and subsequently expanding its footprint in the United States. Currently, the company maintains a modest office in New York to serve its US publisher clients, but the ambition is to build a more substantial presence.
The acquisition of Aryel is expected to provide a significant boost to Onetag’s go-to-market strategy in the US. By offering enhanced creative capabilities and interactive ad formats, Onetag can present a more compelling value proposition to US advertisers and agencies, potentially accelerating its market penetration.
Furthermore, Onetag plans to broaden its curation offering this year to include Connected TV (CTV) advertising. Despite not having a dedicated CTV business unit, Onetag achieved a notable 34% growth in net ad revenue last year. The integration of CTV into its offering is anticipated to unlock substantial incremental growth opportunities, tapping into the rapidly expanding CTV advertising market. The company’s existing success, even without a CTV presence, highlights its strong core business fundamentals and its potential for accelerated growth with this new channel.
Synergistic Client Portfolios and Enhanced Agency Relationships
A key factor contributing to the strategic rationale behind the acquisition is the complementary nature of Onetag and Aryel’s client portfolios. With minimal overlap, the acquisition has already begun to strengthen Onetag’s client base on the buy side. This diversification reduces reliance on any single client segment and broadens the company’s market reach.
Gramigna highlighted this aspect: "That’s another element of why we decided to do this deal. The fact that they’ve been able to get the brands and the CMOs they typically talk to excited about working in programmatic thanks to these formats helps the narrative when it comes to our relationship with media agencies." By enabling brands and Chief Marketing Officers (CMOs) to experience the benefits of programmatic advertising through engaging and innovative creative formats, Aryel is effectively simplifying the adoption of programmatic for clients who might otherwise be hesitant. This, in turn, strengthens Onetag’s position when engaging with media agencies, as they can now offer a more comprehensive and compelling programmatic solution.
Broader Industry Implications and Analysis
The Onetag-Aryel acquisition is indicative of several broader trends shaping the digital advertising industry:
- The Maturation of Sell-Side Curation: As SPO becomes more ingrained, SSPs are actively seeking ways to add demonstrable value beyond basic inventory provision. Curation, enhanced by creative capabilities and AI-driven optimization, represents a significant evolution in this area.
- The Growing Importance of Creative Technology: The effectiveness of programmatic advertising is increasingly tied to the quality and innovation of the ad creative. Platforms that can bridge the gap between creative production and programmatic deployment are gaining a competitive edge.
- AI as a Driver of Optimization: Onetag’s plan to integrate Aryel’s creative data into its AI-based deal optimization engine underscores the growing role of artificial intelligence in automating and improving programmatic workflows. This can lead to more efficient media buying, better targeting, and enhanced campaign performance.
- Consolidation and Strategic Partnerships: The digital advertising ecosystem continues to see consolidation as companies seek to acquire complementary technologies and expand their market reach. Strategic partnerships, like the one that preceded this acquisition, are often precursors to such M&A activity.
- The Rise of Interactive and Immersive Formats: As user attention becomes more fragmented, interactive and immersive ad formats are proving to be more effective at capturing engagement. Companies that can facilitate the creation and programmatic delivery of these formats are well-positioned for future growth.
The integration of Aryel’s creative expertise with Onetag’s robust programmatic infrastructure and curation platform is poised to create a more powerful and differentiated offering in the market. This move signals a clear commitment from Onetag to not only navigate the evolving demands of supply-path optimization but to actively lead the charge in delivering enhanced value and innovation to both publishers and advertisers. The company’s strategic focus on interactive creative and AI-driven optimization positions it to capitalize on emerging trends and to redefine the capabilities of sell-side platforms in the years to come.
