Manage your online ad sales and inventory for free. Google Ad Manager is a hosted ad management solution that can help you sell, schedule, deliver, and measure all of your directly-sold and network-based inventory. Simple, intuitive user interface: Decrease training time and trafficking steps with simplified tagging and inventory management. Google serving speed and reliability Ensure quicker ad delivery and fewer reporting discrepancies. Significant cost savings - it's free! Pay nothing for ad serving, feature upgrades, or system maintenance. it can be found here.