The German price-comparison site idealo built a machine learning pipeline on AWS that facilitated the ability of its data scientists to deliver models that drive improvements in key marketing metrics. idealo offers 500 million products to users in six European countries. Its Machine Learning Engineering team used Amazon SageMaker and AWS Lambda as tools to help the team experiment fast, automate manual processes, and get models into production quickly. Its user-recommendation model increased click-through rates by 111 percent and session rates by 151 percent, and it enhanced the overall customer experience.