This document discusses what it means for an academic library to be data-driven. It explains that a data-driven library uses data, rather than intuition, to guide decisions and measure progress. The process involves asking questions, developing a plan to collect relevant data from systems and surveys, analyzing the data to derive insights, and making recommendations. The document provides several library-specific examples, including analyzing circulation data by patron group over multiple years and monthly checkouts by undergraduates. It recommends skills and tools for academic libraries to become more data-driven, such as spreadsheet analysis, visualization, and qualitative data collection.