Neo4j is being used by Hästens, a company that offers high-quality mattresses, to improve its customer data management and sales force capabilities. The company is leveraging Neo4j's graph database capabilities to create a 360-degree view of its clients, connecting it with SAP systems and sales force to enhance Master Data Management (MDM). By using Neo4j, Hästens has seen faster development processes and unexpected benefits, such as discovering new ways to utilize the graph database. The company is now fully committed to Neo4j, having initially planned for a half-year implementation period, but instead accelerated its adoption due to the positive outcomes they've experienced.