Book excerpt: Standardization is a classic form of rulemaking. Nonetheless, it is notoriously diffuse and gives rise to questions and debate; in particular over the standards' normativity, legitimacy and nature - whether public or private, national or international. Moritz J. K. Blenk applies a policy-orientated approach to international law to comparatively analyze the role of private rulemaking within the context of international economic integration in the World Trade Organization and the European Union. He thereby aims to elucidate the opaque phenomenon of private standardization from a legal perspective and, more profoundly, shed new light on economic integration.