# AWS managed policies for Amazon S3 on Outposts
AWS managed policies

An AWS managed policy is a standalone policy that is created and administered by AWS. AWS managed policies are designed to provide permissions for many common use cases so that you can start assigning permissions to users, groups, and roles.

Keep in mind that AWS managed policies might not grant least-privilege permissions for your specific use cases because they're available for all AWS customers to use. We recommend that you reduce permissions further by defining [ customer managed policies](https://docs.aws.amazon.com/IAM/latest/UserGuide/access_policies_managed-vs-inline.html#customer-managed-policies) that are specific to your use cases.

You cannot change the permissions defined in AWS managed policies. If AWS updates the permissions defined in an AWS managed policy, the update affects all principal identities (users, groups, and roles) that the policy is attached to. AWS is most likely to update an AWS managed policy when a new AWS service is launched or new API operations become available for existing services.

For more information, see [AWS managed policies](https://docs.aws.amazon.com/IAM/latest/UserGuide/access_policies_managed-vs-inline.html#aws-managed-policies) in the *IAM User Guide*.

## AWS managed policy: AWSS3OnOutpostsServiceRolePolicy
AWSS3OnOutpostsServiceRolePolicy

Helps manage network resources for you as part of the service-linked role `AWSServiceRoleForS3OnOutposts`.

To view the permissions for this policy, see [AWSS3OnOutpostsServiceRolePolicy](S3OutpostsServiceLinkedRoles.md).

## S3 on Outposts updates to AWS managed policies
Policy updates

View details about updates to AWS managed policies for S3 on Outposts since this service began tracking these changes.


| Change | Description | Date | 
| --- | --- | --- | 
|  S3 on Outposts added `AWSS3OnOutpostsServiceRolePolicy`  |  S3 on Outposts added `AWSS3OnOutpostsServiceRolePolicy` as part of the service-linked role `AWSServiceRoleForS3OnOutposts`, which helps manage network resources for you.  | October 3, 2023 | 
| S3 on Outposts started tracking changes | S3 on Outposts started tracking changes for its AWS managed policies. | October 3, 2023 |