Boon or Bane?: The Hybrid Institutional Complex for the Sustainable Development Goals

This Special Section marks the tenth anniversary of the United Nations' 2030 Agenda and the Sustainable Development Goals (SDGs). Progress on the latter has been dismal, with only 17% of targets on track. The contributions to this Special Section explore the global governance of the SDGs as a Hybrid Institutional Complex (HIC): a global governance complex characterized by institutional diversity in that it combines formal intergovernmental organizations, informal intergovernmental institutions, public‐private partnerships, multistakeholder initiatives, and private transnational institutions. The HIC framework suggests that this institutional diversity can offer governance benefits, such as good substantive fit for addressing complex transboundary SDG challenges and good political fit by including a broad swathe of actors relevant for goal attainment. Yet it also highlights governance risks, including individual institutions assuming governance tasks that they are poorly suited for and powerful actors cherry‐picking goals and softer forms of governance that fit their interests. By applying the HIC concept to discrete dimensions of SDG governance and subfields, the contributions examine whether institutional diversity is driving or hindering progress. As we approach the 2030 deadline, they provide insights into the benefits and risks of HIC‐based SDG governance, offering reflections on the remaining and post‐2030 development agenda.