The document discusses how connecting real-time bidding (RTA) with customer relationship management (CRM) can help advertisers better target and re-engage existing customers across digital channels like display, email, mobile push notifications, and social media customer audiences. It argues that taking a holistic, orchestrated approach to CRM and RTA can optimize marketing costs and scale customer acquisition if the proper technical infrastructure integrates data sources, campaign execution, and reporting. The author advocates building this infrastructure using existing proprietary and third-party systems rather than developing new components in order to implement an effective RTA-CRM strategy.