AWS Storage Gateway now supports VPC endpoint policies

AWS Storage Gateway Updates
AWS Storage Gateway now supports Virtual Private Cloud (VPC) endpoint policies for your VPC endpoints. Administrators can attach endpoint policies to VPC endpoints, allowing granular access control over Storage Gateway direct APIs for improved data protection and security posture.
AWS Storage Gateway is a hybrid cloud storage service that provides on-premises applications access to virtually unlimited storage in the cloud. You can use AWS Storage Gateway for backing up and archiving data to AWS, providing on-premises file shares backed by cloud storage, and providing on-premises applications low latency access to data in the cloud.
AWS Storage Gateway support for VPC endpoint policies is available in all AWS Regions where Storage Gateway is available. To learn more, visit our documentation.
Source: AWS release notes