The objective of this edited volume is to explore the role that digitisation and new technologies play in the law and practice relating to international investment. The traditional view of international investment law, focusing on physical movement of investors and greenfield establishment, is currently confronted by the increasing diffusion and varying use of technological advances around the world. Digital assets and digital services, inherently, pose challenges to conventional conceptions of territorial nexus in investment protection. Utilization of algorithms and artificial intelligence in investor-state dispute settlement (ISDS) is also not free of controversy when it comes to ensuring fair (and reasoned) outcomes and due process. Moreover, cybersecurity-related concerns exacerbate geopolitical fragmentation and affect negatively investment flows, both at the inward and outward level. The contributors of this edited volume masterfully examine these and other related key issues and critically reflect on how digitalisation and new technologies reshape the foundations of international investment law.