https://developer.salesforce.com/docs/data/data-cloud-int/guide/c360-a-awss3-bucket-policies.html
Configure Amazon S3 Bucket Policies and Permissions | Data 360 Integrations | Data 360 Integration...
Configure bucket policies, Identity and Access Management (IAM) permissions, and Virtual Private Cloud (VPC) endpoint restrictions in AWS so that your
policies and permissionsconfigureamazonbucket