Seven distinct routing frameworks determine profitability in lead generation. Routing decisions directly impact revenue per lead, buyer satisfaction, and operational efficiency. Priority-based routing, weighted distribution, round robin, price-based routing, EPL optimization, auction and ping-post systems, and waterfall distribution each serve different scenarios. Sophisticated operators combine multiple strategies to maximize revenue while maintaining buyer relationships. Each method suits different buyer requirements, lead characteristics, and business objectives. Lead routing is not merely technical implementation but a strategic profit lever requiring continuous optimization based on performance data and market conditions.