keto

Implements Google's Zanzibar model for scalable and consistent global authorization, as evidenced by its ability to handle billions of relationships with low latency, making it ideal for large-scale applications.

Uses the Ory Permission Language (OPL) to define complex access control models like ReBAC, ACL, and RBAC, providing high customization without vendor lock-in, as shown in the quickstart examples.

Delivers permission checks in sub-10ms, suitable for high-traffic applications requiring fast authorization decisions, a key feature highlighted in the README.

Built with cloud architecture best practices, supporting deployment on Kubernetes and modern orchestration platforms for easy scaling and management, as detailed in the deployment options.

Part of the Ory ecosystem, seamlessly integrating with Ory Kratos for identity management and Ory Hydra for OAuth2, offering a comprehensive security stack.