Cerbos is an authorization service that separates access rules from application code. Policies are written in human-readable YAML and managed centrally, and stateless Policy Decision Points, deployed alongside the services that use them, enforce those rules at runtime. The core decision engine, Cerbos PDP, is released under the Apache 2.0 licence. Cerbos Hub is a commercial management control plane. Cerbos can be self-hosted in cloud, on-premises or air-gapped environments.
The company behind Cerbos is Zenauth Ltd, a UK company with a London address, and the website applies the law of England and Wales. The website names no parent company or majority shareholder. Because the PDP runs inside the customer's own infrastructure, authorization decisions and policy data can stay within the organisation's environment. The paid Hub control plane is a separate offering, and its hosting location is not stated on the website. The United Kingdom is outside the EU and EEA, which matters for any data the vendor processes.