Explore the complex world of Open Banking in this 45-minute conference talk from RSA Conference. Delve into the thrills and challenges of standards profiles and security measures forming the OpenID Foundation's UK Open Banking profile. Gain insights into OAuth and OpenID Connect client registration differences, Open Banking goals and their relationship to API security best practices, and the specific OAuth and OpenID Connect components profiled for open banking use. Learn about PSD2, regulatory technical specifications, identity directives, and the role of UK OpenBanking as a competent authority. Examine challenges in layer integration, communicating intent, and transitive trust at scale. Understand the importance of dynamic profiles, software statements, and defined metadata in the Open Banking ecosystem. Discover how to apply UK OpenBanking principles to your own context and explore future directions for standards in this field.