This contribution revisits humanitarian mapping in OpenStreetMap (OSM) from a critical socio-technical perspective. Since the early 2010s, initiatives such as the Humanitarian OpenStreetMap Team (HOT) have played a central role in crisis response by globally mobilizing volunteers to generate geospatial data. Focusing on the Tasking Manager (TM) as both a digital object and infrastructural interface, this study analyzes its technical, social, and semiotic dimensions within their historical and cultural contexts. Particular attention is given to how tensions in humanitarian mapping are metabolized through the interface. The Tasking Manager is approached both as a product of the complex configurations of open and collaborative humanitarian mapping and as an active agent shaping epistemic and organizational processes, following the idea that technologies stabilize social relations rather than merely reflecting them. From an infrastructural perspective, the interface is not a neutral access point but a site where norms, classifications, and workflows are negotiated and enforced (Star, 1999).

The development of the HOT TM can be situated within the broader platformization of digital humanitarianism and crisis mapping. Its emergence is closely tied to the rise of Volunteered Geographic Information (VGI), the spread of mobile telephony in the Global South (Duffield, 2016), and early open-source crisis platforms such as Ushahidi. These precursors share a reliance on digital technologies in volatile and precarious contexts, leveraging platforms to coordinate distributed participation. Platformization operates through interfaces that evolve within complex environments of crisis response, humanitarian governance, and community engagement. In this context, the HOT TM emerged from the OSM community as a “boundary infrastructure” that connects local and global practices, while mediating tensions around epistemic authority, participation, and political asymmetries in VGI. (Herfort et al. 2021)

Data ethnography, leaning on the method of ethnographic content analysis (Altheide, 1987), offers a methodological lens for reconstructing the history of the HOT TM by treating digital traces as ethnographic artifacts that reveal socio-technical figuration of phenomena. The analysis draws on internet documents such as project announcements, blog posts, and forum discussions from HOT’s official channels; OSM wiki entries documenting version updates, feature rollouts, and governance debates; and OSM mapping data, including changeset histories, task logs, and project metadata dating back to 2010. This material allows for tracing the platform’s origins in the 2010 Haiti earthquake response, its iterative development through volunteer feedback loops, and later expansions such as validation hierarchies and scaling for non-crisis applications like capacity building. By following these distributed inscriptions, the analysis highlights not only technical developments but also the stabilization of norms around efficiency, standardization, and remote participation within digital humanitarianism.

Drawing on this material, the paper examines how critical perspectives on digital humanitarianism that emerged in the mid-2010s have been taken up, transformed, or absorbed within the mapping ecosystem. Scholars and practitioners alike have argued that such initiatives, while framed as democratizing, can reproduce inequalities, marginalize local knowledge, and align with technocratic or neoliberal approaches to humanitarian governance. (Glasze und Perkins, 2015; Schröder-Bergen u. a., 2022) From the mid-2010s onward, skepticism toward narratives such as “saving the world one map at a time” (Meier, 2012) increased (Brandeusescu & Sieber, 2015). Critics pointed to reductive forms of remote mapping, the neglect of situated knowledge, inflated claims of impact, and blurred distinctions between response and prevention (Glasze und Perkins, 2015; Duffield, 2016; Turk, 2020; Madianoú, 2024).

The paper argues that the platformization, defined as digital infrastructuring that enables two or more actors to interact with one another (Srnicek, 2019), reconfigures power relations in humanitarian mapping in subtle but consequential ways. Participation appears open and democratic, anyone with internet access can contribute, but is heavily pre-configured. Project managers, often affiliated with NGOs, define mapping priorities and tasks. Satellite imagery, accessed through partnerships with commercial providers, varies in quality and availability across regions, shaping what can be mapped. Embedded biases privilege certain features, such as infrastructure, over more complex social or cultural dimensions. Hierarchies are institutionalized: novice mappers perform tracing tasks, while experienced validators audit and approve contributions.

Epistemically, the Tasking Manager produces “moments of closure” in which complex, lived spaces are translated into standardized, actionable data. As Burns (2014) notes, interfaces can foreclose alternative ways of knowing by enforcing schemas that sideline tacit or non-codifiable knowledge, such as oral histories or informal spatial practices. The tension between messiness and control, which is central to OSM’s communing (Michel, 2024), becomes reconfigured within the platformized environment of humanitarian mapping. The TM channels this tension into structured workflows that prioritize efficiency and scalability, often at the expense of plurality and ambiguity.
In this sense, the Tasking Manager can be understood as an ambivalent socio-technical interface and a historically evolved core component of humanitarian mapping. It makes visible and operational the tensions inherent in digital humanitarianism, functioning as a carrier of sedimented power relations and a mechanism for their ongoing mediation. This perspective highlights the importance of treating interfaces as political objects rather than neutral tools, since technologies are shaped by the conditions and rationalities under which they emerge, yet they also actively produce and stabilize particular forms of practice, knowledge, and participation. Recognizing this dual role enables a more nuanced and historically grounded critique of digital humanitarianism. It also opens up space for imagining more equitable mapping practices that better account for local knowledge, redistribute authority, and remain attentive to the broader global ordering frameworks within which humanitarian technologies operate (Johns, 2023).