A Liaison for a Classroom Building? Curating a Learning ecosystem.
It is very common for librarians to serve as liaisons to academic departments. They teach classes, purchase materials, answer reference questions, assist with research endeavors, and generally get involved with the odds-and-ends of those units. Some librarians also liaise with defined user communities such as first-year students, international students, or students associated with particular residence halls.
This classic approach enables librarians to connect their expertise with different user segments that likely share similar needs, interests, or perspectives. In short, these librarians serve as the human interface of the library.