Strengthening financial sector regulatory arrangements has been a major focus of the G-20 since the crisis in 2008, and progress in strengthening financial regulations is often cited as its success. Nonetheless, the overall contribution of the G20 as a political forum for the oversight of international financial regulation is diming as FinTech is blurring the boundaries between intermediaries and markets, as well as between digital service providers moving into the financial space, nonbank financial companies, and banks. Along the same line, financial technology is causing paradigm changes to the traditional financial system, presenting both challenges and opportunities. As FinTech grows rapidly, the importance of regulation and supervision becomes more prominent.