This chapter provides an overview of recent developments in international migration in OECD countries. After a brief review of developments in migration flows in 2018, based on preliminary data, it provides a detailed analysis of the trends in permanent migration from 2007 to 2017, by country and category – migration for work, for family or humanitarian purposes, and migration within free movement areas. The next section addresses temporary migration for work purposes, including seasonal workers, intra-company transferees, posted workers, trainees and working holidaymakers. The chapter then examines international student mobility and recent trends in asylum requests in OECD countries. It then looks at the composition of migration flows by gender and by country of origin, the evolution of the size of foreign-born populations, and trends in the acquisition of nationality across OECD countries. The chapter concludes with a section on policies, covering the main 2017‑18 changes made to migration management frameworks.