Theorizing the field of study, this chapter undertakes a detailed discussion on the intellectual debates and discussions that have emerged over the last few decades in academic scholarship on diaspora. This chapter traces the terminological history and current concerns that mark the field of inquiry. After undertaking a survey of the critical scholarship on diaspora, this chapter rethinks concepts of nationhood, belonging, home, culture, identity, and interrogates contemporary forms of displacement, dislocation, border crossing, and exile. In examining the relationship of diaspora and diasporic movements with transnationalism and cosmopolitanism, it is made clear that contemporary movements have to be reconfigured in relation to the ideologies of global capital. Providing a critical framework for examining migrant cartographies, this chapter offers a critical space for thinking about the need and importance of this study and attempts to address the complexities and ambiguities of the diaspora experience through close readings of the selected five women writers from the South Asian diaspora. Studying South Asian diaspora literature within the framework of postcolonial and cultural studies; acknowledging the multiple histories of dispersal; exploring the imbrications and intersections of racial, gender, and cultural identity with nation and diaspora; Migration Matters offers an insight into the multiple contestations with the forces of global capitalism that mark contemporary migration.