Glow provides a proprietary system called Glow Machine that helps advertisers build, manage, optimize and understand their Facebook ad campaigns at scale. It was developed with leading Facebook ad agencies to give advertisers greater control over ad display and maximize relevance and efficiency. Glow Machine integrates directly with Facebook APIs and platforms like AppNexus and DoubleClick to provide reporting and insights across channels in one interface. Pricing is 5% of media spend for the software and 15% for managed services. Testimonials praise Glow for features that help power users and its status as the market leader for Facebook API solutions.