The digitization of historical collections represents a valuable opportunity for preservation libraries, which can thereby expand their institutional role as “memory keepers”. Indeed, this tradition-rooted function is now extending into the digital realm, where interoperability offers yet another avenue for implementing a concrete strategy of preserving cultural heritage through the preservation of both analog specimens and their digital counterparts. In this context, the hybrid figure of the data curator/digital librarian emerges as a pivotal figure, tasked with acting within the library by basing his or her activities on the following multidisciplinary pillars: data design and acquisition; data storage and management; data analysis and visualization; and data discovery and consumption. Consequently, the data curator engages in multidisciplinary activities at different and complementary levels. The design of a digitization intervention necessitates consideration of data quality, the reuse of legacy data from previous digitization projects, and the preparation of a scalable plan for the future reuse of new data produced in the present. These complementary activities are considered the cornerstones of a comprehensive digital preservation strategy.