The introduction first contextualizes the topic and addresses its importance and relevance to current issues like global solidarity, regional politics and the policies’ impact on the lives of refugees. It poses the research question of how Turkey, Jordan and Lebanon responded to the mass influx of Syrians from 2011 to 2018. Why they have adopted a particular refugee governance pattern and why does it change over time? It then points out the lacunae in the literature regarding the explanation of patterns, stages and forces of refugee governance. It argues that the book attempts to fill these gaps in the existing literature by identifying the humanitarian and political responses of Turkey, Jordan and Lebanon to the protracted Syrian mass migration challenge from 2011 to 2018. The chapter also introduces two new terms: multi-pattern and multi-stage refugee governance that will be elaborated in Chapter 3. As many concepts used in the migration literature are contested concepts, this chapter allocates a section for defining key concepts like forced migration, mass migration, refugee governance and others. Then, the chapter explains the rationale of case selection and the comparative research design. Methodology and data collection are also explained in this introduction chapter. It ends with an overview of chapters.