Introducing Impressions at Netflix

This blog post discusses how Netflix processes 'impressions'—the visuals seen by users—and their importance in personalizing the viewing experience. It details the creation of a Source of Truth (SOT) dataset, capturing and processing impression events, and maintaining data quality. Netflix's methods for frequency capping, gathering analytics, and ensuring high-quality impressions using various technologies like Apache Kafka and Flink are explained. The post sets the stage for further discussions on improving this system.