If system policies cannot meet your specific requirements, you can create custom policies to implement the principle of least privilege. Custom policies allow you to achieve fine-grained control over permissions and improve resource access security. This topic describes how to use custom policies.
What is a custom policy?
Resource Access Management (RAM) policies are classified into system policies and custom policies. You can manage custom policies based on your business requirements.
After you create a custom policy, you must attach the policy to a RAM user, RAM user group, or RAM role. This way, the permissions that are specified in the policy can be granted to the principal.
You can delete a RAM policy that is not attached to a principal. If the RAM policy is attached to a principal, you must detach the RAM policy from the principal before you can delete the RAM policy.
Custom policies support version control. You can manage custom policy versions based on the version management mechanism provided by RAM.
References
RAM authorization
To use custom policies, you need to take note of the permission control requirements of your business and the authorization information for Edge Node Service (ENS). For more information, see RAM authorization.