Five primary delivery methods form the backbone of professional lead distribution: HTTP POST, CRM integration, portal access, batch files, and live transfers. The delivery moment is where all upstream investment can vanish if technical execution fails silently. Professional operations must support all five simultaneously to serve diverse buyer requirements. JSON and XML formatting, timeout handling, and error recovery protocols define technical specifications. CRM integration with Salesforce and HubSpot introduces complexity; portal access serves smaller buyers; batch files support legacy systems; live transfers command premium economics. Execution reliability and documentation discipline separate professionals from amateurs.