Microservice architecture, increasingly popular for its scalability and flexibility, presents unique challenges in managing authorization compared to traditional monolithic systems, as each microservice often requires distinct and independent authorization protocols. To address these complexities, the text outlines several best practices for secure and efficient authorization in microservices, such as employing standalone Policy Decision Points (PDPs) that are independently scalable and manageable, and leveraging the sidecar design pattern to ensure each application component has its own dedicated PDP. It also emphasizes decoupling policy logic from the enforcement point to simplify the authorization process, using policy as code for better lifecycle management, caching contextual data in PDPs to reduce latency, and supporting fine-grained authorization models like Attribute-Based Access Control (ABAC) for more granular policy configuration. By adhering to these practices, organizations can achieve a resilient and flexible authorization framework, ensuring secure access control across their microservices without unnecessary complexity.