Empowered customers expect businesses to engage them with personalized and contextually relevant interactions. B2C marketing professionals must assemble a contextual marketing engine that includes systems of insight (SoI) and engagement (SoE) to simultaneously serve these customers and meet business goals. Real-time interaction management (RTIM) addresses these needs, but technology selection and integration are complicated. This report outlines the RTIM market and helps B2C marketers narrow down vendor options based on their specific requirements.