Allegro doubles ROAS with GrowthLoop Compound Marketing Engine and Google Cloud
Allegro, an eCommerce giant, chose GrowthLoop with Google Cloud to build an omnichannel ad campaign orchestration system for its innovative retail media network. The impact was monetized through personalized, scalable campaigns, which doubled return on ad spend and increased gross merchandise value.
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Allegro, Poland’s largest e-commerce marketplace and the “Amazon of Eastern Europe” had an inspiring vision for leveraging AI on the data cloud to power their category-leading retail media network. They needed a technology partner to help them bring that vision to life.
Creating a scalable revenue-driving retail media network
Allegro is leading the future of retail media in Europe by leveraging AI-driven insights to power its category-leading retail media network.
Their objective was to monetize their first-party data for their retail brands through their media network while also growing revenue from crowded advertising channels by increasing personalization through more precise audience targeting at scale.
Limited first-party data access for personalization
To bring their retail media network to life, Allegro needed to give their marketing and media team access to their first-party data to create and monetize audiences and enhance personalization through precise audience targeting at scale, all in a security and privacy compliant way.
The company required a solution that could:
- Automate campaign orchestration for efficiency and scalability.
- Improve audience segmentation and ad relevance across multiple channels.
- Maximize return on ad spend (ROAS) while maintaining a privacy-compliant approach.
Idea to MVP in two months
To achieve their vision, Allegro built the omnichannel audience factory, a hybrid solution that combines their in-house AI-powered “brain” with GrowthLoop’s Compound Marketing Engine. This solution, running on Google Cloud, optimizes audience creation and campaign execution by:
- Predicting the best-performing channels for each audience segment.
- Determining the most relevant products for individual customers.
- Automating the delivery of personalized ads across Meta, TikTok, DV360, and YouTube.
By integrating GrowthLoop’s agentic AI capabilities with Allegro’s proprietary AI models, the company was able to move from idea to MVP in just two months.
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“These results prove that compound marketing isn’t just theory—it’s a game-changer. With GrowthLoop’s cutting-edge technology, we’re continuously optimizing our marketing efforts at scale, achieving results that simply weren’t possible before.”
2X ROAS for off-site ads and improved GMV

Allegro’s AI-powered retail media solution delivered exceptional performance improvements across multiple channels:
- 2X increase in ROAS for its advertising campaigns.
- Over 60% increase in gross merchandise value (GMV) on DV360, Meta, TikTok, and YouTube.
- Nearly 4X improvement in click-through rate on Meta and 70% decrease in cost-per-click.
Expecting future growth
Building on these strong results, Allegro is scaling its Omnichannel Audience Factory from an initial 20 audiences to over 200 in phase two. By leveraging GrowthLoop’s Compound Marketing Engine, Allegro is pioneering the future of retail media networks with AI-powered audience intelligence.
Learn how GrowthLoop can help you meet your goals
Get in touch with our team to learn how you can use GrowthLoop to activate data from your data warehouse to drive more revenue.