Building Ideal Retargeting Scenarios for a Price Comparison Champion

Founded in Berlin in 2000, idealo is one of the leading product and price comparison platforms in Europe, and one of the largest portals in the German ecommerce market. The site is connected to over 50 K online stores, has over 500 M product offers, and attracts nearly 100 M monthly visits globally. idealo focuses on convenience, transparency, and technological expertise, enabling partners to grow their businesses by generating high-quality traffic.

idealo has increased its focus on profitability and was looking for a partner that could deliver strong results in a competitive industry. The challenge for RTB House was to deliver at scale—across both web and in-app campaigns—while hitting strict CPA targets from the outset.

Our work with idealo has been continually scaling up and hitting evolving targets over a number of years. Our retargeting activities are based on Deep Learning-powered technology, which can navigate through huge amounts of data in order to find high-potential users and show them just the right products. To support idealo in reaching users on all platforms, we created separate tracks for web and app users, reaching customers in the way they prefer to interact with the brand. The campaign was designed from the outset to scale rapidly while hitting strict CPA goals and performance targets.

RTB House campaigns leveraged Deep Learning to generate fast results and then scale up effectively. We exceeded expectations and outperformed other retargeting providers. idealo saw a 30% uplift in revenue and a 9% increase in conversion rate from all retargeting activities. This success in the German market convinced the brand to introduce campaigns with RTB House in new countries, widening our cooperation to cover Spain, Italy, Austria, and France*.

*Metrics compare 2023 to the state prior to activating campaigns with RTB House.