This chapter examines the process related to policymaking as well as potential determinants of policy choices. It begins with a discussion of conceptual models of policymaking, namely the institutional, rational, incremental, group, elite, and process models. It then considers the policy cycle, which models the policy process as a series of political activities, consisting of agenda setting, policy formulation, policy adoption, implementation, and evaluation. It also analyses the role of institutions, frames, and policy styles in policymaking and concludes with an assessment of the most crucial domestic and international factors shaping the design of policies, focusing in particular on theories of policy diffusion, policy transfer, and cross-national policy convergence, along with international sources that affect domestic policymaking.