Technological innovation has played a pivotal role in enhancing regional payment connectivity. Advancements in cross-border transaction systems have improved operational efficiency, while enhancing security, transparency, and trust across diverse financial networks. These developments have been central to the establishment of the ASEAN Regional Payment Connectivity (RPC) initiative, paving the way for greater financial inclusion and economic development in the region. Although regulatory and governance hurdles remain, they can be addressed through coordinated efforts that integrate sound policy framework and innovative technology. This paper examines the role of technological advancements in driving the progress and recent expansion of the RPC initiative.