The document discusses using big data and personalization to improve the user experience (UX) strategy for an accounting software. It describes implementing an "Advisor" system that tracks user data and provides personalized on-screen messages to guide users. This led to improved retention and customer loyalty. The key lessons are to tie the UX strategy to clear business goals, show early results, find ways to monetize projects, manage data collection as one effort, and partner UX with customer experience (CX).