Too often, poor Web checkout experiences, especially on mobile devices, lead to user frustration and shopping cart abandonment. To streamline checkout and increase conversion rates, leaders from across the payments ecosystem have come together at the World Wide Web Consortium (W3C) to develop open standards for payments on the Web. This incorporates new browser features to accelerate checkout, integration with mobile payment applications and enhanced payment security through tokenization and multi-factor authentication. In this talk I'll go over the Payment Request API family of W3C standards and how they can be used to streamline checkout across the web.