Call Tracking Software captures inbound phone calls as a marketing-attribution signal — using dynamic number insertion (DNI) to display unique phone numbers tied to each marketing source/campaign/keyword, recording and transcribing the calls, scoring lead quality, and feeding attributed call data back into CRM and marketing analytics. The category serves industries where phone calls remain a dominant lead-conversion channel — auto, home services, healthcare, insurance, financial services, B2B mid-market, multi-location franchises. Core capabilities include dynamic number insertion (DNI) by source/campaign/keyword, call recording and AI-driven transcription, lead-quality scoring, integration with Google Ads/Bing Ads/MAP/CRM, geographic call-routing, and conversation analytics for marketing optimization. The market includes specialist platforms (CallRail, Invoca, Marchex, DialogTech, Convirza, ResponseTap, Infinity, WhatConverts, CallTrackingMetrics).