Portfolio marketers stand to build deeper, more data-driven insights to infuse into the wider organization by delving into their revenue technology stack. With this in mind, portfolio marketers must understand which technologies to prioritize, the underlying data captured, and when and how to use the right data most appropriately. This report provides portfolio marketers with an organized view of mature revenue technology, including its use cases, primary users, associated data and insights, and the types of activities informed by those insights. It is the first report in a series of three on mature, established, and emerging technologies.