Learn about authorization strategies for modern multi-client distributed applications powered by microservices. Explore a reference architecture that combines OpenID Connect, OAuth 2.0, tokens, and claims to achieve a healthy separation of concerns between identity, authorization, and business logic. Discover how PolicyServer implements this architecture, allowing for future growth and scalability. Dive into topics such as security tokens, identity permissions, policy-based authorization, and dependency injection. Gain insights into UI implementation and explore code examples demonstrating the new Policy API. By the end of this 54-minute talk, you'll have a comprehensive understanding of best practices for implementing authorization in modern application architectures.