1) The document discusses how data-driven design can help improve user experience (UX) by getting to know the audience through metrics like fundraising benchmarks, Google Analytics, and user research. 2) It provides examples of how analyzing donation and registration goals from Google Analytics helped optimize pages for mobile users and focus on key areas. 3) User testing insights uncovered issues like important elements not being visible without scrolling and use of internal jargon, which were then addressed in redesigns to improve personalization and the user experience.