Whatever the cause—whether it is the move by banks to a more agile platform based model, the increasing demand for personalized servicesfrom customers, or the rise of fintech service providers—it is clear that the momentum towards open APIs is now irreversible. Soon it will be the norm to obtain account information and manage payments using third-party applications that connect directly into bank systems via public domain APIs—a development which promises to fundamentally transform the payments experience for end-users ranging from individual consumers to global corporations.