Name: Cerbos Review: Fine-Grained Authorization Made Simple
Item: Cerbos

Cerbos is an authorization service that evaluates access policies and returns allow/deny decisions for applications. It supports declarative policies, attribute-based rules, and integrates easily with backend services. It can run as a lightweight sidecar or managed service.

Pricing

Self-hosted open-source edition is free under Apache license; hosted/cloud plans are subscription/pay-as-you-go based on request volume, environments, support, and enterprise features.

License

Open Source

Key Features

Policy-as-code with declarative YAML/JSON rules
Role-based and attribute-based access control
Fast decision evaluation with caching
Audit-friendly decision logs and explanations
SDKs and APIs for backend integration

Pros

Simple declarative policies
Fast sidecar deployment
Supports RBAC and ABAC
Good integration with existing backends
Open-source flexibility

Cons

Less known than larger authorization platforms
Requires policy design discipline
Advanced enterprise support may cost extra

Use Cases

Fine-grained API authorization
Microservice access policies
Internal tool permission management

Verdict

Cerbos is a strong choice for teams that want lightweight, developer-friendly authorization without heavyweight identity management. Its declarative policies and open-source deployment model make it easy to adopt incrementally. The main limitations are a smaller ecosystem and less built-in identity management than larger platforms. It suits engineering teams needing fine-grained access control in APIs, microservices, and internal tools.

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