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Cerbos and OPA are both open-source policy engines for authorization, but serve different needs. Cerbos is purpose-built for application-level access control with YAML policies and CEL expressions, offering a developer-friendly experience and up to 17× faster performance than OPA for authorization use cases. OPA uses the Rego language and serves as a general-purpose policy engine for infrastructure and applications, providing more flexibility but requiring steeper learning curves. Cerbos excels in simplicity, built-in audit logging, and specialized authorization features, while OPA offers broader policy capabilities beyond just access control.

Cerbos vs. OPA

Cerbos is an authorization solution for enterprise software and AI. The Cerbos Blog covers implementation strategies, integration guides, best practices, product updates, and insights on authorization, zero trust, compliance, and AI security.