Policy networks travel well and help us to understand EU policy-making. The chapter reviews the literature up to 1996 and identifies the main objections to using the concept to study the EU: explanation, level of analysis, institutions, boundaries, and policy. The chapter discusses the limits to policy networks and the conditions under which they work. The factors sustaining EU policy networks include: the national style of policy-making, degree of resource/power dependence, characteristics of the policy area, stage of the policy process, degree of aggregation, and functional representation. The Afterword assesses the record and concludes that policy networks became part of the conceptual vocabulary of studies of EU policy.