Explore common patterns and challenges in implementing OpenID Connect and OAuth 2.0 for modern application architectures in this comprehensive conference talk. Gain insights into designing token-based systems, selecting appropriate protocol flows, and addressing key considerations such as resource and token design, client integration, session management, and revocation. Learn about identity tokens, access tokens, and the differences between self-contained and reference tokens. Discover practical tips for navigating authentication and authorization in microservices and cloud-native applications, and understand how to effectively implement these protocols to enable secure and scalable identity and access control solutions.