Scaling Authorization with Cedar and OPAL

AWS has introduced Cedar, a new policy language aimed at enhancing application-level authorization by separating policy configuration from application code, allowing for a more scalable and maintainable system. Cedar is specifically designed for application-level authorization, unlike other multi-purpose policy languages, and offers benefits such as easier scaling, fewer bugs, faster response times, and improved security. The article discusses using open-source projects like Cedar-Agent and OPAL to build a comprehensive and scalable authorization system, emphasizing the importance of separating the policy configuration from code and using Infrastructure as Code (IaC) for setup. The OPAL-Cedar example repository is explored, highlighting the use of Git for policy storage, Docker for local setups, and the hierarchical structuring of data for policy decisions. The system facilitates auto-scaling of decision points and enforcement of permissions through a centralized administration point, with practical examples provided in Node.js and Python applications. The setup supports scalable management of both permissions and data sources, demonstrating how policy changes can be implemented without altering application code, ultimately offering a robust framework for managing authorization at scale.

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