As digital technologies rapidly evolve, updating and enhancing models of digital literacy pedagogy in technical and professional communication (TPC) becomes more urgent. In this article, we use "digital life" to conceptualize the ever-changing ways of knowing and being in postinternet society. Using collaborative autoethnography, we investigate features of threshold concepts in TPC pedagogy that may support models of digital literacy that are resistant to tools-based definitions, foster student agency, and facilitate accessibility, equity, and justice.

Teaching writing involves helping students develop as critical communicators who use writing to question often-unseen systems of power enabled by infrastructures, including digital spaces and technologies. This article uses Walton, Moore, and Jones' (2019) 3Ps Framework---positionality, privilege, and power---to explore how, through assignments we developed incorporating the Fabric of Digital Life digital archive, instructors can make visible to students the invisible layers of infrastructure. Using the 3Ps framework, we illustrate how our pedagogical approach encourages students to use writing to interrogate digital infrastructure and the ways it is entangled with positionality, privilege, and power.