In this paper, Seda Gürses, Princeton University; Carmela Troncoso, Gradiant; and Claudia Diaz, COSIC/iMinds, Dept. of Electrical Engineering, KU Leuven, summarize their initial conceptualization  of how experts apply data minimization strategies. Specifically, based on a study of existing privacy preserving systems, they first elaborate on the design strategies hidden behind the term data minimization, offering a preliminary description of the activities that a privacy engineer performs to apply the right data minimization strategies.