Migration has been intensifying and diversifying since the 1990s. According to the United Nations International Migration Report, there were 244 million international migrants in 2015 – 10 per cent more than only five years earlier, in 2010 (international migrants are here defined as people living in a given country who are either foreign born or have foreign citizenship). Of these, more than two-thirds (71 per cent) lived in high-income countries, while the developing regions hosted 29 per cent of the world’s total international migrant population. Socio-economic transformations such as those induced and intensified by globalisation processes are usually drivers of increased international migration. They intensify grievances and opportunities that lead people to seek better living and working opportunities in distant lands while also facilitating transport and communication. This Handbook focuses on the dynamics that link migration and globalisation processes from economic, social, political and cultural perspectives, looking at the challenges that emerge for labour markets, welfare systems, families and cultures, and institutions and governance arrangements as well as norms. This introduction discusses in detail, and with reference to the relevant literature, the interconnection between migration and globalisation, and presents the structure of the Handbook.