LeadBoxer and Opentracker, co-founded by Cralan Deutsch and Wart Fransen, leverage Elasticsearch to power real-time analytics for B2B sales and web tracking. Initially using MySQL, they transitioned to Cassandra for scalability but lacked real-time search capabilities. To address this, they incorporated Elasticsearch, which allowed flexible, real-time searches and informed the creation of LeadBoxer, a tool for capturing and qualifying leads based on online activity. By manipulating Elasticsearch's scoring algorithms, they developed a customizable lead scoring system, enhancing sales teams' ability to target potential leads effectively. The integration of Elasticsearch enabled the delivery of qualified leads with adjustable scoring preferences, facilitating personalized sales strategies. This approach has positioned the companies to potentially transform B2B and B2C sales processes by combining external data with user behavior insights, aiming to present clients with tailored sales opportunities.