This chapter summarises the lessons from Parts I to IV and concludes. First, we revisit the major drivers of FinTech: finance, technology, and regulation. Second, we examine how each of these drivers brings its own challenges, which one or two of the other domains have the potential to mitigate. Third, we show how the global discussion on how to regulate FinTech is indicative of a broader regulatory trend to expect more from the financial system than the mere efficient distribution of capital; and we argue how financial regulation which promotes resilience, financial inclusion, and expansion of financial resources is well equipped to further the overarching objective of sustainable development. Fourth, we analyse further how FinTech (and FinTech-oriented financial regulation) may be used to advance sustainable development. Fifth, we analyse the constituent building blocks of a comprehensive FinTech strategy.