Jess Williams writes: “Academic libraries in the US have shifted service models over the years for several reasons. Rapid changes in technology play a large role, but other external factors—like budget cuts and institutional needs—also drive evolution. As new skillsets are identified and positions created, leaders can also introduce new frameworks. Many academic libraries have pivoted away from subject-based or discipline-based liaison models, which have traditionally relied on designated staffers to build relationships with faculty and act as points of contact for specific services. They are now switching to team-based models or hybrid models.”