Spencer Darrington discusses how Microsoft has matured its marketing supply chain by implementing the Global Services Gateway (GSG) powered by K2 software. The GSG provides a single portal for marketers to request services, provides real-time status updates, and enables flexible workflows. This has increased efficiency by 10-15% and scaled to support over 4,000 users across 99 countries. Darrington sees opportunities to further optimize the marketing supply chain by integrating additional teams and developing mobile and web services capabilities to continue driving costs savings and improvements.