Three leading retailers - Adidas, eBay, and Walmart - are using Neo4j graph databases to improve their operations and customer experiences. Adidas combines product and content data into a searchable graph to personalize customer experiences. eBay uses Neo4j to optimize delivery routing as growth strained their previous system. Walmart employs Neo4j recommendations to provide relevant personalization at scale. Neo4j allows these retailers to better connect and leverage their different data sources.