Vietnam’s banking sector is undergoing rapid digital transformation, creating new opportunities for core banking solution providers. Both established “legacy” core banking vendors and newer neo-core fintech players are competing to modernize the technology foundations of Vietnam’s traditional banks and emergent digital-only banks. This report provides a comprehensive market overview, analyzes marketing channels and customer acquisition strategies in this B2B fintech space, compares key local and foreign core banking vendors (with market share and positioning), and examines the decision drivers of Vietnamese banks. Insights are tailored for a neo-core platform planning its first entry into Southeast Asia, highlighting how to effectively market core banking solutions in Vietnam’s context.