Oso is an authorization-as-a-service platform designed to simplify the implementation of robust, enterprise-grade Role-Based Access Control systems. It enables developers to integrate fine-grained permissions and custom roles into their applications without overhauling existing architectures. By decoupling authorization logic from business code, Oso allows for faster development cycles and reduces the risk of errors. Key Features and Functionality: - Local Authorization: Oso operates directly over your existing data in PostgreSQL, eliminating the need for data synchronization and ensuring high performance with latencies under 10 milliseconds and support for up to 1 million reads per second. - Extensibility: The platform supports various authorization models, including RBAC, Relationship-Based Access Control , and Attribute-Based Access Control , allowing for flexible and customizable permission structures. - Deterministic and Testable: Built in Rust, Oso offers a deterministic environment that is testable, debuggable, and observable, ensuring reliability and ease of maintenance. - Deployment Flexibility: Oso can be deployed across cloud, hybrid, or on-premises environments, providing adaptability to various infrastructure needs. Primary Value and User Solutions: Oso addresses the complex challenge of implementing secure and scalable authorization systems by providing a service that integrates seamlessly with existing application architectures. It enables organizations to implement fine-grained permissions and custom roles efficiently, reducing development time and minimizing errors. By decoupling authorization logic from business code, Oso enhances security, ensures correctness, and supports rapid iteration, allowing businesses to meet evolving access control requirements without significant architectural changes.