The policy management feature allows you to automatically create policies (in a declarative language) to set stringent guideline for safe and detailed controls on the Spinnaker deployment pipeline. This feature gives you the freedom to set or declare specific policy rules or guidelines. For e.g., Automated Testing should be completed before deployment, is a rule which must be completed when creating a Spinnaker pipeline and policies.
Policy management also allows you to validate policies in runtime through 3rd party policy engines (like Open Policy Agent) using REST API. Moreover, security managers can quickly add, modify, delete policies in tune with business policy changes. OES Policy Management allows you to quickly declare policies and integrate with 3rd party policy managers for validations.
Now that we have a fair idea about what Policy Management does and what are the benefits let's take a quick look how the policy management page looks. Refer to the image below: