Migration in southern Peru is determined by a cross-border socioeconomic context that involves Peru, Chile, and Bolivia. This research analyzes academic literature on how southern Peruvian and foreign populations participate in migratory and commercial dynamics within regions characterized by their border condition. An analytical review of academic literature published between 2011-2023 on migratory processes occurring between 1990-2020 was conducted using platforms such as Google Scholar and Scielo. The analysis was structured around three thematic axes: configuration of cross-border migratory networks, articulation between commercial activities and population mobility, and identity construction processes of different migrant groups. The results show that cross-border commercial activity constitutes a persistent historical factor since colonial times, reconfigured after the War of the P...