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title: Custom Policies
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# Custom Policies

> For the full documentation index, see: https://docs.mulesoft.com/llms.txt

**New Feature Available**: This product feature is outdated and is only provided for existing custom
policies. To create new custom policies, use the
[Flex Gateway Policy Development Kit (PDK)](https://docs.mulesoft.com/pdk/latest/policies-pdk-overview).

Policies enforce regulations to help manage security, control traffic, and improve API adoption. For
example, a policy can control authentication, access, and service level agreements (SLAs). You can
create custom policies based on your specific business requirements and apply them to APIs to extend
existing functionality or define new ones.

The workflow for creating custom policies for Anypoint Flex Gateway is done in Exchange. The policy
is then available to be applied to an API in Anypoint API Manager.

For more information, refer to the following:

- [Implement a Flex Gateway Custom Policy in Rust](https://docs.mulesoft.com/gateway/1.12/policies-custom-flex-implement-rust)

- [Publish a Flex Gateway Custom Policy](https://docs.mulesoft.com/gateway/1.12/policies-custom-flex-getting-started)

- [Apply a Flex Gateway Custom Policy in Local Mode](https://docs.mulesoft.com/gateway/1.12/flex-local-deploy-custom-policy)