The Indus Valley Civilization (IVC; c. 2600–1900 BCE) is currently undergoing a profound paradigmatic reassessment. Traditional models, which emphasized centralized authority, uniform urban planning, and sudden civilizational collapse, are being systematically challenged by emerging archaeological datasets and interdisciplinary analytical frameworks. This review synthesizes recent scholarship across seven thematic domains to reconstruct the spatio-temporal evolution of Harappan settlement systems, the reconfiguration of its settlement landscape, the role of material culture as a proxy for urban complexity, the architecture of its economic networks, the civilization's environmental resilience strategies, the new methodological frontiers reshaping the field, and the case for a multicentric model of Indus urbanism. By integrating high-resolution radiometric dating, ancient DNA analysis, satellite remote sensing, isotopic provenance studies, gravity-model spatial analysis, and paleoenvironmental reconstruction, this review argues that the IVC was not a monolithic, top-down state but a dynamic, regionally heterogeneous, and ecologically adaptive civilization. The so-called 'collapse' of the IVC is reframed as a process of strategic transformation and resilient decentralization rather than catastrophic failure. Key findings include: the pre-urban foundations at sites like Bhirrana and Kunal demonstrate that the path to urbanism was regionally differentiated; the multicentric settlement network was held together by flexible economic and cultural integration rather than rigid administrative control; material standardization served simultaneously as an administrative mechanism and a vehicle of social identity; and the civilization's 'decline' reflects intelligent adaptation to hydro-climatic reorganization consistent with the onset of the Meghalayan Age. Future research must harness Big Data archaeology, computational network analysis, and integrated paleoenvironmental data infrastructures to resolve persistent chronological and geographical knowledge gaps.