Case Study: Leading Multilingual Search Engine Provider achieves improved ad relevance and increased revenue with Appen

We provided in-market evaluators for multiple international markets to ensure accurate ad performance

Leading Multilingual Search Engine Provider Company needed to ensure ads were performing optimally across multiple international markets because clicks drive revenue. The company relied on algorithms and an in‑house team but required in‑market evaluators to accurately measure ad relevance, so it engaged Appen to provide evaluators and data labeling services.

Appen supplied in‑market evaluators and project managers who reviewed, verified, cleaned, and labeled ads and landing‑page content—assigning ratings on a five‑point scale and delivering evaluation data on time. That labeled data let the provider measure relevance trends, identify and fix root causes of irrelevant ads, expand search advertising into new markets with confidence, and train ML models to serve more relevant ads and ultimately increase revenue; Appen’s high‑quality, timely data was credited with improving ad relevance and enabling scalable experimentation.