This document summarizes the history and development of the Summa/Search system used at the State and University Library in Denmark. It began as an effort to improve search speeds, flexibility, and the user experience. Key features included integrated search across resources, exploratory search capabilities, and faceted navigation. Over time, facets were improved with proper counts and only the most useful facets displayed. Recent usability testing showed successes like the Google-like search but also opportunities to improve finding articles, discovering facets, and relevancy ranking. Future work may include more full text data, automatic tagging, rights integration and other improvements to continue developing the system around the needs and expectations of users.